All Topics  
List of operating systems

 

 
   Email Print
   Bookmark   Link
 

 

List of operating systems
 
 
  Topics List of operating systems Topic Home

Operating systems can be categorized by technology, ownership, licensing, working state, usage, and by many other characteristics. In practice, many of these groupings may overlap.








Discussion
Ask a question about 'List of operating systems'
Start a new discussion about 'List of operating systems'
Answer questions from other users
Full Discussion Forum



Encyclopedia


Operating systems can be categorized by technology, ownership, licensing, working state, usage, and by many other characteristics. In practice, many of these groupings may overlap.

Proprietary


Acorn Computers
Acorn Computers

Acorn Computers was a British computer company established in Cambridge, England, in 1978. The company produced a number of computers which were especially popular in the United Kingdom....

  • Acorn MOS
    Acorn MOS

    Acorn Computers's Machine Operating System was a computer operating system used in the Acorn BBC computer range. It included support for four-channel sound and graphics, file system abstraction, and digital and analogue I/O including a daisy-chained fast expansion bus....
     (on the BBC Micro
    BBC Micro

    The BBC Microcomputer System, or BBC Micro, was a series of microcomputers and associated peripherals designed and built by Acorn Computers for the BBC Computer Literacy Project, operated by the British Broadcasting Corporation....
     and BBC Master
    BBC Master

    The BBC Master was a home computer released by Acorn Computers Ltd in early 1986. It was designed and built for the British Broadcasting Corporation and was the successor to the BBC Micro....
    )
  • Arthur
    Arthur (operating system)

    Arthur is an early operating system that was used on Acorn Computers Ltd ARM architecture-central processing unit-based computers from about 1987 until the much-superior RISC OS was completed and made available in April 1989....
  • ARX
    ARX (operating system)

    ARX was a Unix-like operating system written in Modula-2 developed by Acorn Computers Ltd in the United Kingdom and at the Acorn Research Centre at Palo Alto for their new ARM architecture RISC central processing unit....
  • RISC OS
    RISC OS

    RISC OS is a computer operating system which was originally developed by Acorn Computers Ltd in Cambridge, England for their ARM architecture based computers....
  • RISC iX
    RISC iX

    RISC iX was a Unix-like operating system designed to run on the Acorn Archimedes. Heavily based on Berkeley Software Distribution, it was initially completed in 1988 ? a year after Arthur but prior to RISC OS....
     (based on 4.3BSD)


Amiga
Amiga

The Amiga is a family of personal computers originally developed by Amiga Corporation. Development on the Amiga began in 1982 with Jay Miner as the principal hardware designer....

  • AmigaOS
    AmigaOS

    AmigaOS is the default native operating system of the Amiga personal computer. It was developed first by Commodore International, and initially introduced in 1985 with the Amiga 1000....
    • AmigaOS 1.0-3.9
      AmigaOS versions

      There have been many different versions of the AmigaOS operating system during its two decades of history.The first AmigaOS was nicknamed Workbench from the name of its GUI Interface, due to an error of Commodore Marketing and Sales Department, which labeled the OS disk just with the name "Workbench Disk" and not with the correct name "...
       (68k)
    • AmigaOS 4
      AmigaOS 4

      AmigaOS 4 is a line of Amiga operating systems which runs on PowerPC microprocessors. "The Final Update" was released in 24 December 2006 after five years of development by the Belgian company Hyperion Entertainment under license from Amiga, Inc....
       (PowerPC)
      • AmigaOS 4.0
      • AmigaOS 4.1
  • Amiga Unix
    Amiga Unix

    Commodore International, in 1990, did a full port of AT&T Unix System V for the Amiga computer family , informally known as Amix. Bundled with the Amiga 3000UX, Commodore's Unix was one of the first ports of SVR4 to the 68k architecture....
     (aka Amix)


Apollo Computer
Apollo Computer

Apollo Computer, Inc., founded 1980 in Chelmsford, Massachusetts by William Poduska , developed and produced Apollo/Domain workstations in the 1980s....

  • AEGIS
  • Domain/OS
    Domain/OS

    Domain/OS is the operating system used by the Apollo/Domain line of workstations manufactured by Apollo Computer, Inc. during the late 1980s, as the successor to the one previously used, AEGIS....
     One of the first network-based systems. Ran on Apollo/Domain
    Apollo/Domain

    Apollo/Domain was a range of workstations developed and produced by Apollo Computer from circa 1980 to 1989. The machines were built around the Motorola 68k family of processors, except for the DN10000, which had from one to four of Apollo's RISC processors, named Apollo PRISM....
     hardware. Later bought by Hewlett-Packard
    Hewlett-Packard

    The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....
    .


Apple Inc.

  • Apple II series
    Apple II series

    The Apple II was one of the first highly successful mass produced microcomputer products, manufactured by Apple Computer and introduced in 1976....
    • Apple DOS
      Apple DOS

      Apple DOS refers to operating systems for the Apple II series of Personal computer from 1979 through early 1983. Apple DOS had three major releases: DOS 3.1, DOS 3.2, and DOS 3.3; each one of these three releases was followed by a second, minor "bug-fix" release, but only in the case of Apple DOS 3.2 did that minor release receive its own ver...
    • ProDOS
      ProDOS

      ProDOS was the name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, was the last official operating system usable by all Apple II series computers, and was distributed from 1983 to 1993....
  • Apple III
    Apple III

    The Apple III was a personal computer aimed at business users, manufactured and sold by Apple Inc. from May, 1980 until its discontinuation on April 24, 1984....
    • SOS (Sophisticated Operating System)
  • Apple Lisa
    Apple Lisa

    The Apple Lisa was a personal computer designed at Apple Computer, Inc. during the early 1980s.The Lisa project was started at Apple in 1978 and evolved into a project to design a powerful personal computer with a graphical user interface that would be targeted toward business customers....
    • Lisa OS
  • Macintosh
    Macintosh

    File:Imac alu.pngMacintosh, commonly shortened to Mac, is a brand name which covers several lines of personal computers designed, developed, and marketed by Apple Inc....
    • Mac OS
      Mac OS

      Mac OS is the trademarked name for a series of graphical user interface-based operating systems developed by Apple Inc. for their Macintosh line of computer systems....
      • System Software 1
      • System Software 2
      • System Software 3
      • System Software 4
      • System Software 5
      • System 6
        System 6

        System 6 is a graphical user interface-based operating system for Macintosh computers. It was released in 1988 by Apple Inc and was part of the Mac OS line of operating systems....
      • System 7
        System 7 (Macintosh)

        System 7 is a single-user graphical user interface-based operating system for Macintosh computers. It was introduced on May 13, 1991 by Apple Computer....
         (codenamed "Big Bang")
      • Mac OS 8
        Mac OS 8

        Mac OS 8 is an operating system released by Apple Inc. on July 26 1997. It represented the largest overhaul of the Mac OS since the release of System 7 , some six years previous....
      • Mac OS 9
        Mac OS 9

        Mac OS 9 is the final major release of Apple Inc. "Classic" Mac OS. Introduced on October 23 1999, Apple positioned it as "The Best Internet Operating System Ever," highlighting Apple Sherlock Internet search capabilities, integration with Apple's free online services known as .Mac, and improved Open Transport networking....
    • Unix-like
      Unix-like

      A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
      • A/UX
        A/UX

        A/UX was Apple Computer's implementation of the Unix operating system for some of their Apple Macintosh computers. The later versions of A/UX ran on the Macintosh II, Macintosh Quadra and Macintosh Centris series of machines as well as the Macintosh SE/30....
      • Darwin
        Darwin (operating system)

        Darwin is an open source POSIX-compliant computer operating system released by Apple Inc. in 2000. It is composed of code developed by Apple, as well as code derived from NEXTSTEP, FreeBSD, and other free software projects....
         (open source
        Open source

        Open source is an approach to design, development, and distribution offering practical accessibility to a product's source . Some consider open source as one of various possible design approaches, while others consider it a critical Strategy element of their business operations....
         underpinnings of Mac OS X, based on FreeBSD
        FreeBSD

        FreeBSD is a Unix-like free software operating system descended from AT&T Unix via the Berkeley Software Distribution branch through the 386BSD and Berkeley Software Distribution#4.4BSD and descendants operating systems....
         and NextStep
        NEXTSTEP

        Nextstep was the original Object-oriented operating system, computer multitasking operating system that NeXT developed to run on its range of proprietary computers, such as the NeXTcube....
        )
      • iPhone OS
        IPhone OS

        The iPhone OS or OS X iPhone is the operating system developed by Apple Inc. for the iPhone and iPod Touch. Like Mac OS X, from which it was derived, it uses the Darwin foundation....
      • MkLinux
        MkLinux

        MkLinux is an open source computer operating system started by the Open Software Foundation Research Institute and Apple Computer in February 1996 to port Linux to the PowerPC platform, and Macintosh computers....
      • Mac OS X
        Mac OS X

        Mac OS X is a line of computer operating systems developed, marketed, and sold by Apple Inc., and since 2002 has been included with all new Macintosh computer systems....
        • Mac OS X v10.0
          Mac OS X v10.0

          Mac OS X version 10.0, code named ?Cheetah?, was the first Software version of Mac OS X, Apple Inc. desktop and server operating system. Mac OS X v10.0 was released on March 24, 2001 for a price of US$129....
           (aka Mac OS X 10.0 "Cheetah")
        • Mac OS X v10.1
          Mac OS X v10.1

          Mac?OS?X version?10.1, code named ?Puma?, was the second Software version of Mac OS X, Apple Inc. desktop and server operating system. It superseded Mac OS X v10.0 and preceded Mac OS X v10.2....
           (aka Mac OS X 10.1 "Puma")
        • Mac OS X v10.2
          Mac OS X v10.2

          Mac OS X version 10.2 ?Jaguar? was the third Software version of Mac OS X, Apple Inc. desktop and server operating system. It superseded Mac OS X v10.1 code name Puma and preceded Mac OS X v10.3 ?Panther?....
           (aka Mac OS X 10.2 "Jaguar")
        • Mac OS X v10.3
          Mac OS X v10.3

          Mac OS X version 10.3 ?Panther? was the fourth Software version of Mac OS X, Apple Inc. desktop and server operating system. It followed Mac OS X v10.2 ?Jaguar? and preceded Mac OS X v10.4 ?Tiger?....
           (aka Mac OS X 10.3 "Panther")
        • Mac OS X v10.4
          Mac OS X v10.4

          Mac OS X version 10.4 ?Tiger? was the fifth Software version of Mac OS X, Apple Inc. desktop and server operating system for Macintosh computers....
           (aka Mac OS X 10.4 "Tiger")
        • Mac OS X v10.5
          Mac OS X v10.5

          Mac OS X version 10.5 "Leopard" is the sixth Software version of Mac OS X, Apple Inc. desktop and server operating system for Apple Macintosh computers, and the successor to Mac OS X v10.4 "Tiger"....
           (aka Mac OS X 10.5 "Leopard")
        • Mac OS X v10.6
          Mac OS X v10.6

          Mac OS X 10.6 Snow Leopard is an Apple Inc. operating system being developed to succeed Mac OS X v10.5. Apple CEO Steve Jobs announced Snow Leopard at WWDC on 9 June 2008, saying the software would ship "about a year" after the announcement....
           (aka Mac OS X 10.6 "Snow Leopard")
        • Mac OS X Server
          Mac OS X Server

          Mac OS X Server is Apple's UNIX server operating system. Based on the same architecture as Mac OS X, Mac OS X Server includes additional services, applications and administration tools for managing and deploying servers....
      • Newton OS
        Newton OS

        Newton OS was the operating system for the Apple Newton PDAs produced by Apple from 1993 - 1997. Newton OS was written entirely in C++ and trimmed to be low power consuming and use the available memory efficiently....


Atari
Atari

Atari is a corporate and brand name owned by several entities since its inception in 1972. It is currently owned by Atari Interactive, a wholly owned subsidiary of the French publisher Infogrames ....

  • Atari DOS
    Atari DOS

    Atari DOS is the disk operating system used with the Atari 8-bit family of computers. Operating system extensions loaded into memory were required in order for an Atari computer to access a Disk storage....
     (for 8-bit computers)
  • Atari TOS
    Atari TOS

    The Operating System is the operating system of the Atari Atari ST range of computers. This range includes the 520ST, 1040ST and the F, FM and E variations ....
  • Atari MultiTOS
    MiNT

    MiNT is a free software alternative operating system Kernel for the Atari ST and its successors. Together with the free system components fVDI , XaAES , and TeraDesk , MiNT provides a free Atari TOS compatible replacement OS that is capable of computer multitasking....


BAE Systems
BAE Systems

BAE Systems plc is a British defense contractor and aerospace company headquartered in Farnborough, Hampshire, Hampshire, England, that has global interests, particularly in North America through its subsidiary BAE Systems Inc....

  • XTS-400
    XTS-400

    The XTS-400 is a Multilevel security secure computer operating system. It is multi-user and Computer multitasking. It works in networked environments and supports Gigabit Ethernet and both IPv4 and IPv6....


Be Inc.
Be Inc.

Be Incorporated was an United States computer company founded in 1990, best known for the BeOS and BeBox personal computer. Be was founded by former Apple Computer executive Jean-Louis Gass?e with capital from Seymour Cray....

  • BeOS
    BeOS

    BeOS was an operating system for personal computers which began development by Be Inc. in 1991. It was first written to run on BeBox hardware. BeOS was optimized for digital media work and was written to take advantage of modern hardware facilities such as symmetric multiprocessing by utilizing modular I/O bandwidth, pervasive multithreading,...
    • BeIA
      BeIA

      BeIA, or "BeOS for Internet Appliances" was a cut down version of Be Inc.'s BeOS for use on embedded devices.BeIA is believed by many to be partially responsible for the death of Be, Inc., as sales were never anywhere near as high as anticipated....
  • magnussoft ZETA (illegal copy of BeOS originally developed by yellowTAB
    YellowTAB

    yellowTAB was a Germany software firm that produced an operating system called Magnussoft ZETA based on BeOS 5.1.0. They never publicly confirmed that they have the BeOS source code or what their licensing agreement with BeOS's owners PalmSource is, but it is likely that whatever arrangement they had was legal, at least in Germany....
     and discontinued by magnussoft
    Magnussoft

    magnussoft Deutschland GmbH is a pan-European computer game developer and publisher. The company is seated near Dresden in the eastern region of Germany....
    )


Burroughs Corporation

  • Burroughs MCP


Convergent Technologies
Convergent Technologies (Unisys)

Convergent Technologies was a company formed by a small group of people who left Intel Corporation and Xerox PARC in 1979.Convergent Technologies' first product was the IWS tower based on the Intel 8086, which ran Convergent Technologies Operating System - their first operating system....

  • Convergent Technologies Operating System
    Convergent Technologies Operating System

    The Convergent Technologies Operating System, also known variously as CTOS, BTOS and STARSYS, was a modular, message-passing, multi-process based operating system....
     (later acquired by Unisys
    Unisys

    Unisys Corporation , based in Blue Bell, Pennsylvania, Pennsylvania, United States, and incorporated in Delaware, is a global provider of information technology services and programs....
    )


Digital/Tandem Computers/Compaq/HP

  • OS/8
    OS/8

    OS/8 was the primary operating system used on the PDP-8 minicomputer developed by Digital Equipment Corporation of Maynard, Massachusetts, Massachusetts....
  • ITS
    Incompatible Timesharing System

    ITS, the Incompatible Timesharing System , was an early, revolutionary, and influential time-sharing operating system from Massachusetts Institute of Technology; it was developed principally by the MIT Artificial Intelligence Laboratory at MIT, with some help from Project MAC....
     (for the PDP-6
    PDP-6

    The PDP-6 was a computer model developed by Digital Equipment Corporation in 1963. It was influential primarily as the prototype for the later PDP-10; the instruction sets of the two machines are almost identical....
     and PDP-10
    PDP-10

    The PDP-10 was a mainframe computer manufactured by Digital Equipment Corporation from the late 1960s on; the name stands for "Programmed Data Processor model 10"....
    )
  • Multi-Programming Executive
    Multi-Programming Executive

    MPE is a late 1970/early 1980s era business-oriented minicomputer operating system made by Hewlett-Packard.It runs the HP 3000 family computers, which originally used HP custom Complex instruction set computer Central processing unit and were later migrated to PA-RISC....
     (from HP
    Hewlett-Packard

    The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....
    )
  • TOPS-10
    TOPS-10

    The TOPS-10 System was a computer operating system from Digital Equipment Corporation for the PDP-10 mainframe computer launched in 1967. TOPS-10 evolved from the earlier "Monitor" software for the PDP-6 and -10 computers; this was renamed TOPS-10 in 1970....
     (for the PDP-10)
  • WAITS
    WAITS

    WAITS was a heavily-modified variant of Digital Equipment Corporation's Monitor operating system for the PDP-6 and PDP-10 mainframe computers, used at the Stanford Artificial Intelligence Laboratory up until 1990; the mainframe computer it ran on also went by the name of "SAIL"....
     (for the PDP-6 and PDP-10)
  • TENEX
    TOPS-20

    The TOPS-20 operating system by Digital Equipment Corporation was the second proprietary OS for the PDP-10 mainframe computer. TOPS-20 began in 1969 as Bolt, Beranek and Newman's TENEX operating system, using special paging hardware....
     (from BBN
    BBN

    BBN might refer to:* Business Branding Network, an international network of marketing and communications agencies* BBN Technologies, formerly Bolt, Beranek and Newman, a technology company in Cambridge, Massachusetts, best known for its work on packet switching technology and its construction of the Interface Message Processor - the first r...
    , for the PDP-10)
  • TOPS-20
    TOPS-20

    The TOPS-20 operating system by Digital Equipment Corporation was the second proprietary OS for the PDP-10 mainframe computer. TOPS-20 began in 1969 as Bolt, Beranek and Newman's TENEX operating system, using special paging hardware....
     (for the PDP-10)
  • RSTS/E
    RSTS/E

    RSTS is a multi-user time-sharing operating system, developed by Digital Equipment Corporation , for the PDP-11 series of 16-bit minicomputers....
     (multi-user time-sharing OS for PDP-11
    PDP-11

    The PDP-11 was a series of 16-bit minicomputers sold by Digital Equipment Corporation from 1970 into the 1990s. Though not explicitly conceived as successor to DEC's PDP-8 computer in the Programmed Data Processor series of computers , the PDP-11 replaced the PDP-8 in many Real-time computing....
    s)
  • RSX-11
    RSX-11

    RSX-11 is a family of real-time operating systems mainly for PDP-11 computers created by Digital Equipment Corporation , common in the late 1970s and early 1980s....
     (multiuser, multitasking OS for PDP-11s)
  • RT-11
    RT-11

    RT-11 was a small, single-user real-time operating system for the Digital Equipment Corporation PDP-11 family of 16-bit computers. RT-11 was first implemented in 1970 and was widely used for real-time computing systems, process control, and data acquisition across the full line of PDP-11 computers....
     (single user OS for PDP-11)
  • VMS (originally by DEC
    Digital Equipment Corporation

    Digital Equipment Corporation was a pioneering United States company in the computer industry. It is often referred to within the computing industry as DEC ....
    , now by HP
    Hewlett-Packard

    The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....
    ) for the VAX
    VAX

    VAX was an instruction set architecture developed by Digital Equipment Corporation in the mid-1970s. A 32-bit complex instruction set computer ISA, it was designed to extend or replace DEC's various Programmed Data Processor ISAs....
     mini-computer range, Alpha
    DEC Alpha

    Alpha, originally known as Alpha AXP, was a 64-bit reduced instruction set computer instruction set architecture developed by Digital Equipment Corporation , designed to replace the 32-bit VAX complex instruction set computer ISA and its implementations....
     and Intel Itanium 2; later renamed OpenVMS)
  • Domain/OS
    Domain/OS

    Domain/OS is the operating system used by the Apollo/Domain line of workstations manufactured by Apollo Computer, Inc. during the late 1980s, as the successor to the one previously used, AEGIS....
     (originally Aegis, from Apollo Computer
    Apollo Computer

    Apollo Computer, Inc., founded 1980 in Chelmsford, Massachusetts by William Poduska , developed and produced Apollo/Domain workstations in the 1980s....
     who were bought by HP)
  • RTE HP's Real Time Executive (ran on the HP 1000)
  • TSB HP's Time Share Basic (yes, it was an operating system, ran on the HP 2000 series)
  • Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
    • Digital UNIX
      Tru64 UNIX

      Tru64 UNIX is a 64-bit UNIX operating system for the DEC Alpha instruction set architecture , currently owned by Hewlett-Packard . Previously, Tru64 UNIX was a product of Compaq, and before that, Digital Equipment Corporation , where it was known as Digital UNIX ....
       (derived from OSF/1, became HP's Tru64 UNIX
      Tru64 UNIX

      Tru64 UNIX is a 64-bit UNIX operating system for the DEC Alpha instruction set architecture , currently owned by Hewlett-Packard . Previously, Tru64 UNIX was a product of Compaq, and before that, Digital Equipment Corporation , where it was known as Digital UNIX ....
      )
    • HP-UX
      HP-UX

      HP-UX 11i is Hewlett-Packard's proprietary software implementation of the Unix operating system, based on UNIX System V . It runs on the HP 9000 PA-RISC-based range of central processing unit and HP Integrity Intel's Itanium-based systems, and was also available for later Apollo/Domain systems....
    • Ultrix
      Ultrix

      Ultrix was the brand name of Digital Equipment Corporation's native Unix systems. While ultrix is the Latin word for avenger, the name was chosen solely for its sound....
  • NonStop Kernel (Originally from Tandem Computers
    Tandem Computers

    Tandem Computers was an early manufacturer of fault-tolerant computer systems, marketed to the growing number of transaction processing customers who used them for Automatic teller machines, banks, stock exchanges and other similar needs....
     for their line of fault-tolerant platforms; originally called Guardian). It supports concurrent execution of:
    • Guardian
    • OSS (POSIX-compliant Open System Services)


Fujitsu
Fujitsu

is a Japanese company specializing in semiconductors, air conditioners, computers , telecommunications, and Service , and is headquartered in Minato, Tokyo, Tokyo....

  • Towns OS
    Towns OS

    The Fujitsu Towns OS was a color Graphical User Interface desktop + mouse type similar to Microsoft Windows and Macintosh GUIs and designed specifically for the proprietary FM Towns PC architecture....


Green Hills Software
Green Hills Software

Green Hills Software is a privately owned company that builds operating systems and development tools for embedded systems. The company was founded in 1982 by Dan O'Dowd and Carl Rosenberg....

  • INTEGRITY
    Integrity (operating system)

    INTEGRITY is a real-time operating system produced and marketed by Green Hills Software. It is royalty-free, POSIX-certified, and intended for use in embedded systems needing reliability, availability, and fault tolerance....
     Reliable Operating system
  • INTEGRITY-178B
    INTEGRITY-178B

    INTEGRITY-178B is a royalty-free ARINC ARINC 653–compliant real-time operating system manufactured and marketed by Green Hills Software. It is a subset of the securely partitioned Integrity real-time operating system....
     A DO-178B certified version of INTEGRITY
    Integrity (operating system)

    INTEGRITY is a real-time operating system produced and marketed by Green Hills Software. It is royalty-free, POSIX-certified, and intended for use in embedded systems needing reliability, availability, and fault tolerance....
    .
  • µ-velOSity
    Green Hills Software

    Green Hills Software is a privately owned company that builds operating systems and development tools for embedded systems. The company was founded in 1982 by Dan O'Dowd and Carl Rosenberg....
     A lightweight microkernel
    Microkernel

    In computer science, a microkernel is a computer kernel which provides the mechanisms needed to implement an operating system, such as low-level address space management, thread management, and inter-process communication....
    .


Hewlett-Packard
Hewlett-Packard

The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....

  • HP Real-Time Environment; ran on HP1000 series computers.
  • HP Multi-Programming Executive; ran on HP3000 mini-computers.
  • HP-UX
    HP-UX

    HP-UX 11i is Hewlett-Packard's proprietary software implementation of the Unix operating system, based on UNIX System V . It runs on the HP 9000 PA-RISC-based range of central processing unit and HP Integrity Intel's Itanium-based systems, and was also available for later Apollo/Domain systems....
    ; runs on HP9000 and Itanium servers - from small to mainframe-class computers.


Intel Corporation
Intel Corporation

Intel Corporation is the world's largest semiconductor company and the inventor of the X86 architecture series of microprocessors, the processors found in most personal computers....

  • iRMX
    RMX

    iRMX is a real-time operating system designed specifically for use with the Intel 8080 and Intel 8086 family of processors. It is an acronym for Real-time Multitasking eXecutive....
    ; real-time operating system originally created to support the Intel 8080 and 8086 processor families in embedded applications.


IBM
IBM

International Business Machines Corporation, abbreviated IBM and nicknamed "Big Blue" , is a multinational corporation computer technology and consulting corporation headquartered in Armonk, New York, New York, United States....

  • OS/360 and successors
    OS/360 and successors

    See also History of IBM mainframe operating systemsOS/360, officially known as IBM System/360 Operating System, was a group of batch processing operating systems developed by International Business Machines for their then-new System/360 mainframe computer, announced in 1964....
     on IBM mainframes
    • OS/360 (First official OS targeted for the System/360
      System/360

      The IBM System/360 is a mainframe computer system family announced by IBM on April 7, 1964. It was the first family of computers making a clear distinction between computer architecture and implementation, allowing IBM to release a suite of compatible designs at different price points....
       architecture, saw customer installations of the following variations:)
      • PCP (Primary Control Program, a kernel and a ground breaking automatic space allocating file system)
      • MFT
        MFT

        MFT may stand for:* MFT * Major Field Test* Managed Flash Technology* Marriage and family therapy* Mean field theory* Media Foundation Transform , a plugin filter model in Microsoft Media Foundation for processing media data such as digital signal processing, decoding, encoding, mixing...
         (Multi-Programming Fixed Tasks, had 15 fixed size partitions defined at boot time)
      • MVT
        MVT

        Multiprogramming with a Variable number of Tasks was the most sophisticated of three available configurations of the OS/360's control program. In turn, OS/360 was an operating system for the IBM System/360 line of computers....
         (Multi-Programming Variable Tasks, had up to 15 partitions defined dynamically)
    • OS/VS (The official port of OS/360 targeted for the System/370
      System/370

      The IBM System/370 was a model range of IBM mainframes announced on June 30, 1970 as the successors to the System/360 family. The series maintained backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement....
       virtual memory
      Virtual memory

      Virtual memory is a computer system technique which gives an application program the impression that it has contiguous working memory , while in fact it may be physically fragmented and may even overflow on to disk storage....
       architecture. "OS/370" is not correct name. Customer installations in the following variations:)
      • SVS (Single Virtual Storage (both VS1 & VS2 began as SVS systems))
      • OS/VS1
        OS/VS1

        Operating System/Virtual Storage 1, or OS/VS1,was an IBM mainframe computer operating system designed to be run on IBM System/370 hardware....
         (Operating System/Virtual Storage 1, Virtual-memory version of OS/MFT)
      • OS/VS2 (Operating System/Virtual Storage 2, Virtual-memory version of OS/MVT)
        • OS/VS2 R2 (called Multiple Virtual Storage, MVS, eliminated any need for VS1)
    • MVS/SE
    • MVS/SP (MVS System Package)
    • MVS/XA
      MVS/XA

      MVS/XA, or Multiple Virtual Storage/Extended Architecture, was a version of the IBM operating system that is now called z/OS. It was available only on the high-end 43xx, and 308x and later ranges of IBM computers, and was replaced by MVS/ESA, then OS/390 and later z/OS....
       (MVS/SP V2. MVS supported eXtended Architecture, 31bit addressing)
    • MVS/ESA
      MVS/ESA

      MVS/ESA: MVS Enterprise System Architecture. Version of MVS, first introduced as MVS/SP Version 3 in February 1988. Replaced by/renamed as OS/390 late 1995....
       (MVS supported Enterprise System Architecture)
    • OS/390
      OS/390

      OS/390 is an International Business Machines operating system for the System/390 IBM mainframes.OS/390 was introduced in late 1995 in an effort, led by the late Randy Stelman, to simplify the packaging and ordering for the key, entitled elements needed to complete a fully functional MVS operating system package....
       (Upgrade from MVS, with an additional Unix-like
      Unix-like

      A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
       environment.)
    • z/OS
      Z/OS

      z/OS is a 64-bit operating system for mainframe computers, created by IBM. It is the successor to OS/390, which in turn followed MVS and combined a number of formerly separate, related products....
       (OS/390 supported z/Architecture
      Z/Architecture

      z/Architecture, initially and briefly called ESA/390 Modal Extensions , refers to IBM's 64-bit computing architecture for the current generation of IBM mainframe computers....
      , 64bit addressing.)


  • DOS/360 and successors on IBM mainframes
    • BOS/360 (Early interim version of DOS/360, briefly available at a few Alpha & Beta System 360 sites)
    • TOS/360 (Similar to BOS above and more fleeting, able to boot and run from 2x00 series tape drives)
    • DOS/360
      DOS/360

      Disk Operating System/360, also DOS/360, or simply DOS, was an operating system for IBM mainframes. It was announced by IBM on the last day of 1964, and it was first delivered in June 1966.– extensive treatment of IBM's offerings during this period...
       (Disk Operating System (DOS). First commonly available OS for System/360 due to problems in the OS/360 Project. Multi-programming system with up to 3 partitions.)
      • DOS/360/RJE (DOS/360 with a control program extension that provided for the monitoring of Remote Job Entry hardware (Card Reader & Printer) connected by dedicated phone lines.)
    • DOS/VS (First DOS offered on System/370 systems, provided Virtual Storage.)
    • DOS/VSE (upgrede of DOS/VS. Still had fixed size processing partitions, but up to 14 partitions.)
    • VSE/SP (renamed from DOS/VSE.)
    • VSE/ESA (DOS/VSE extended virtual memory support to 32 bit addresses (Extended System Architecture)).
    • z/VSE (Latest version of the four decades old DOS lineage. Now supports 64 bit addresses, Multiprocessing, Multiprogramming, SNA, TCP/IP, and some virtual machine features in support of Linux workloads. (All DOS ref. IBM website))


  • CP/CMS
    CP/CMS

    CP/CMS was a time-sharing operating system of the late 60s and early 70s, known for its excellent performance and advanced features. It had three distinct versions:...
     and successors on IBM mainframes (Control Program / Cambridge Monitor System, Virtual Machine
    Virtual machine

    In computer science, a virtual machine is a software implementation of a machine that executes programs like a real machine.Definitions...
     operating System, VM Line
    History of CP/CMS

    This lengthy article explores the History of CP/CMS ? the historical context in which this important IBM time-sharing operating system was built....
    )
    • CP-40/CMS (for System/360
      System/360

      The IBM System/360 is a mainframe computer system family announced by IBM on April 7, 1964. It was the first family of computers making a clear distinction between computer architecture and implementation, allowing IBM to release a suite of compatible designs at different price points....
       Model 40)
    • CP-67
      CP-67

      CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center....
      /CMS (for System/360 Model 67)
    • VM/370 Virtual Machine
      Virtual machine

      In computer science, a virtual machine is a software implementation of a machine that executes programs like a real machine.Definitions...
       / Conversational Monitor System, VM (operating system)
      VM (operating system)

      VM refers to a family of IBM virtual machine operating systems used on IBM System/370, System/390, zSeries, and System z IBM mainframes and compatible systems, including the Hercules emulator for personal computers....
       for System/370 with Virtual Memory.
    • VM/XA VM (operating system)
      VM (operating system)

      VM refers to a family of IBM virtual machine operating systems used on IBM System/370, System/390, zSeries, and System z IBM mainframes and compatible systems, including the Hercules emulator for personal computers....
       eXtended Architecture for System/370
      System/370

      The IBM System/370 was a model range of IBM mainframes announced on June 30, 1970 as the successors to the System/360 family. The series maintained backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement....
       with extended Virtual Memory
      Virtual memory

      Virtual memory is a computer system technique which gives an application program the impression that it has contiguous working memory , while in fact it may be physically fragmented and may even overflow on to disk storage....
      .
    • VM/ESA Virtual Machine
      Virtual machine

      In computer science, a virtual machine is a software implementation of a machine that executes programs like a real machine.Definitions...
       /Extended System Architecture, added 32 bit addressing to VM series.
    • z/VM
      Z/VM

      z/VM is the current version in IBM's VM of virtual machine operating systems. z/VM was first released in October 2000 and remains in active use and development ....
       z/Architecture version of the VM OS (64 bit addressing).


  • TPF Line on IBM mainframes (real-time operating system, for aircraft system)
    • ACP (Airline Control Program)
    • TPF
      Transaction Processing Facility

      TPF is an International Business Machines real-time operating system for IBM mainframe descended from the IBM System/360 family, including zSeries and ZSeries....
       (Transaction Processing Facility)
    • z/TPF (z/Architecture
      Z/Architecture

      z/Architecture, initially and briefly called ESA/390 Modal Extensions , refers to IBM's 64-bit computing architecture for the current generation of IBM mainframe computers....
       extension)


  • Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     on IBM mainframes
    • UTS
      UTS (Mainframe UNIX)

      UTS is an implementation of the UNIX operating system for IBM mainframe computers. Amdahl Corporation created the first versions of UTS, and released it in May 1981, with UTS Global later acquiring rights to the product....
    • AIX/370
    • AIX/ESA
    • Linux
      Linux

      Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
       (Linux on System z, z/Linux)
    • OpenSolaris
      OpenSolaris

      File:Opensolaris-screenshot-2008-05.pngOpenSolaris is an open source operating system based on Sun Microsystems' Solaris . It is also the name of the project initiated by Sun to build a developer and user community around it....
       (OpenSolaris for IBM System z)


  • Others on IBM mainframes
    • IBSYS
      IBSYS

      IBSYS was the magnetic tape#Magnetic tape data storage based operating system that IBM supplied with its IBM 7090 and IBM 7094 computers. A similar operating system , also called IBSYS, was provided with IBM 7040 and IBM 7044 computers....
       (tape based operating system for IBM 7090
      IBM 7090

      The IBM 7090 was a second-generation transistorized version of the earlier IBM 709 vacuum tube mainframe computers and was designed for "large-scale scientific and technological applications"....
       and IBM 7094)
    • CTSS (The Compatible Time-Sharing System developed at MIT's Computation Center)
    • RTOS/360 (Real Time Operating System, run on 5 NASA custom System/360/75s. A mash up by the Federal Systems Division of the MFT system management, PCP basic kernel and file system, with MVT task management and FSD custom real time kernel extensions and error management. The pinnacle of OS/360 development.)
    • MTS
      Michigan Terminal System

      Michigan Terminal System is an operating system for the IBM System/360 and its successors that was developed jointly by the following institutions:...
       (Michigan Terminal System for IBM System/360)
    • TSS/360
      TSS/360

      The IBM Time Sharing System TSS/360 was an early time-sharing operating system which ran on a special model of the System/360 line of mainframes, the IBM System/360 Model 67....
       (Time Sharing System for IBM System/360)
    • MUSIC/SP
      MUSIC/SP

      MUSIC/SP was developed at McGill University in the late 1960s from an IBM system called RAX . The system ran on IBM System/360, System/370, and IBM 4300 series IBM mainframe hardware, and offered novel features such as file access control and data compression....
       (developed by McGill University
      McGill University

      McGill University is a Public university#Canada located in Montreal, Quebec, Canada. It bears the name of James McGill, a prominent Montreal merchant from Scotland, whose bequest formed the beginning of the university....
       for IBM System/370)
    • IJMON (A Bootable serial I/O monitor for loading programs for IBM 1400 and IBM 1800
      IBM 1800

      The IBM 1800 Data Acquisition and Control System was a process control variant of the IBM 1130 with two extra instructions and extra I/O capabilities....
      .)


  • IBM Series/1
    IBM Series/1

    The IBM Series/1 computer was a 16-bit minicomputer, introduced in 1976, that in many respects competed with other minicomputers of the time, such as the PDP-11 from Digital Equipment Corporation and similar offerings from Data General and Hewlett-Packard....
    • EDX
      EDX

      EDX is a three letters abbreviation that can mean* Energy-dispersive X-ray spectroscopy, an analytical method in physics and chemistry.* A data register on the IA-32#General data registers microprocessor architecture...
       (Event Driven Executive)
    • RPS
      RPS

      RPS is a three-letter abbreviation that may refer to:* Racial Preservation Society, a defunct British pressure group* Reactor Protective System, a set of safety components in a nuclear power plant...
       (Realtime Programming System)


  • IBM 8100
    IBM 8100

    See also: IBM 8000 series, canceled in 1961The IBM 8100 was at one time IBM?s principal distributed computing engine, providing local processing capability under two incompatible operating systems and was follow-on to IBM 3790....
    • DPCX (Distributed Processing Control eXecutive)
    • DPPX (Distributed Processing Programming Executive)


  • IBM System/34, IBM System/36
    • SSP (System Support Program)


  • IBM System/38
    • CPF
      CPF

      CPF may refer to:*Cadastro de Pessoas F?sicas, an identity number for individuals issued by the Brazilian government*Canadian Patrol Frigate, such as the Halifax class frigate...
       (Control Program Facility)


  • IBM System/88
    • Stratus VOS
      Stratus VOS

      VOS is a proprietary operating system running on Stratus Technologies computer systems. Currently VOS is only available on Stratus's ftServer and Continuum platforms, and is typically used in critical transaction processing scenarios where the built-in fault-tolerance delivers extremely high-availability....
       (developed by Stratus
      Stratus

      Stratus may refer to:*Stratus cloud, a cloud type**Nimbostratus cloud, a cloud type**Stratocumulus cloud, a cloud type**Altostratus cloud, a cloud type...
      , and used for IBM System/88, Original equipment manufacturer
      Original Equipment Manufacturer

      OEM stands for "Original Equipment Manufacturer".An original equipment manufacturer, or OEM is typically a company that uses a component made by a second company in its own product, or sells the product of the second company under its own brand....
       from Stratus.)


  • AS/400, iSeries, System i, Power Systems i Edition
    • OS/400
      OS/400

      IBM i is an operating system used on IBM Power Systems, a unified server platform from the former IBM System i and IBM System p servers. IBM i was formerly known as i5/OS or OS/400....
       (descendant of System/38
      System/38

      The System/38 was a midrange computer Server Platform manufactured and sold by the IBM Corporation. The system offered a number of innovative features, and was the brainchild of IBM engineer Frank Soltis....
       CPF, include System/36
      System/36

      The IBM System/36 was a minicomputer marketed by International Business Machines from 1983 to 2000. It was a multi-user, multi-tasking successor to the System 34....
       SSP environment.)
    • i5/OS (extends OS/400
      OS/400

      IBM i is an operating system used on IBM Power Systems, a unified server platform from the former IBM System i and IBM System p servers. IBM i was formerly known as i5/OS or OS/400....
       with significant interoperability features.)
    • IBM i (extends i5/OS.)


  • UNIX
    Unix

    Unix is a computer operating system originally developed in 1969 by a group of American Telephone & Telegraph employees at Bell Labs, including Ken Thompson , Dennis Ritchie, Douglas McIlroy, and Joe Ossanna....
     on IBM POWER
    IBM POWER

    POWER is a RISC instruction set architecture designed by International Business Machines. The name is a backronym for Performance Optimization With Enhanced RISC....
    • AIX (Advanced Interactive eXecutive, a System V Unix version)
    • AOS
      Academic Operating System

      Academic Operating System was IBM's version of Berkeley Software Distribution Unix for the IBM RT. It was offered to academic institutions as an alternative to AIX operating system, the usual RT operating system....
       (a BSD Unix version)


  • IBM PC
    IBM PC

    The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform ....
     and successors on x86 architecture
    X86 architecture

    The generic term x86 refers to the most commercially successful instruction set architecture in the history of personal computing. It derived from the model numbers, ending in "86", of the first few processor generations Backward compatibility with the original Intel 8086....
    • PC DOS / IBM DOS
      • PC DOS 1.x, 2.x, 3.x (developed jointly with Microsoft)
      • IBM DOS 4.x, 5.0 (developed jointly with Microsoft)
      • PC DOS 6.x, 7, 2000
    • OS/2
      OS/2

      OS/2 is a computer operating system, initially created by Microsoft and IBM, then later developed by IBM exclusively. The name stands for "Operating System/2," because it was introduced as part of the same generation change release as IBM's "IBM Personal System/2 " line of second-generation personal computers....
      • OS/2 1.x (developed jointly with Microsoft)
      • OS/2 2.x
      • OS/2 Warp V3
      • OS/2 Warp V4
      • eComStation
        EComStation

        eComStation is a PC operating system based on OS/2, published by Serenity Systems, USA. It includes several additions and accompanying software....
         (Warp 4.5/Workspace on Demand, rebundled by Serenity Systems International)


  • Others
    • IBM Workplace OS (Microkernel
      Microkernel

      In computer science, a microkernel is a computer kernel which provides the mechanisms needed to implement an operating system, such as low-level address space management, thread management, and inter-process communication....
       based operating system, developed and canceled in 1990s)
    • K42
      K42

      K42 is an open-source research operating system for cache-coherent 64-bit multiprocessor systems. It was developed primarily at IBM Thomas J. Watson Research Center in collaboration with University of Toronto and University of New Mexico....
       (open-source research operating system on PowerPC
      PowerPC

      PowerPC is a RISC instruction set architecture created by the 1991 Apple Inc.?IBM?Motorola alliance, known as AIM alliance. Originally intended for personal computers, PowerPC CPUs have since become popular embedded system and high-performance processors....
       or x86 based cache-coherent multiprocessor systems)
    • Dynix
      Dynix

      Dynix is an operating system developed by Sequent Computer Systems. It is a flavor of Unix based on BSD. DYNIX was replaced by DYNIX/ptx, which was based on the System V version of UNIX produced by AT&T....
       (developed by Sequent
      Sequent

      In proof theory, a sequent is a formalized statement of provability that is frequently used when specifying proof calculus for deductive reasoning....
      , and used for IBM NUMA-Q too.)


International Computers Limited

  • GEORGE
    GEORGE (operating system)

    GEORGE was the name given to a series of operating systems released by International Computers and Tabulators in the 1960s, for the ICT 1900 series of computers....
     2/3/4 GEneral ORGanisational Environment, used by ICL 1900
    ICT 1900

    ICT 1900 is the name given to a series of mainframe computers released by International Computers and Tabulators in the 1960s....
     series mainframes
  • ICL VME, particularly appearing on the ICL 2900 Series
    ICL 2900 Series

    The ICL 2900 Series was a range of mainframe computer computer systems announced by the UK manufacturer International Computers Limited on 9 October 1974....


LynuxWorks
LynuxWorks

LynuxWorks, Inc. is a software company based in San Jose, California, that produces embedded operating systems and tools for embedded systems development....
 (originally Lynx Real-time Systems)

  • LynxOS
    LynxOS

    The LynxOS RTOS is a Unix-like real-time operating system from LynuxWorks . Sometimes known as the Lynx Operating System, LynxOS features full POSIX conformance and, more recently, Linux compatibility....


Micrium Inc.

  • MicroC/OS-II
    MicroC/OS-II

    MicroC/OS-II , is a low-cost priority-based preemption real-time operating system computer multitasking kernel for microprocessors, written mainly in the C programming language....
     (Small pre-emptive priority based multi-tasking kernel)


Microsoft
Microsoft

Microsoft Corporation is a multinational corporation computer technology corporation that develops, manufactures, licenses, and supports a wide range of computer software products for computing devices....

  • Xenix
    Xenix

    Xenix is a version of the Unix operating system, licensed by Microsoft from AT&T in the late 1970s. The Santa Cruz Operation later acquired exclusive rights to the software, and eventually began distributing it as SCO UNIX....
     (licensed version of Unix; licensed to SCO in 1987)
  • MSX-DOS
    MSX-DOS

    MSX-DOS is a Disk operating system developed by Microsoft for the 8-bit home computer standard MSX, and is a cross between MS-DOS rev 1.0 and CP/M....
     (developed by MS Japan for the MSX 8-bit computer)
  • MS-DOS
    MS-DOS

    MS-DOS is an operating system commercialized by Microsoft. It was the most commonly used member of the DOS family of operating systems and was the main operating system for personal computers during the 1980s....
     (developed jointly with IBM, versions 1.0–6.22)
  • Windows CE
    Windows CE

    Windows CE is Microsoft's operating system for minimalistic computers and embedded systems. Windows CE is a distinctly different operating system and Kernel , rather than a trimmed-down version of desktop Windows....
     (OS for handhelds, embedded devices, and real-time applications that is similar to other versions of Windows)
    • Windows CE 3.0
      Windows CE 3.0

      Microsoft Windows CE 3.0 is an operating system designed for embedded systems including Personal digital assistant and mobile phones, working within the constraints of the slow processors and reduced amount of memory available on these devices....
    • Windows Mobile
      Windows Mobile

      Windows Mobile is a compact operating system combined with a suite of basic applications for mobile devices based on the Microsoft Windows API application programming interface....
       (based on Windows CE, but for a smaller form factor)
    • Windows CE 5.0
      Windows CE 5.0

      Windows CE 5.0 is a successor to Windows CE 4.2, the third release in the Windows CE Microsoft .NET family. Windows CE 5.0 like its predecessors is marketed towards the embedded device market and independent device vendors....
  • DOS-based Windows
    • Windows 1.0
      Windows 1.0

      Windows 1.0 is a 16-bit graphical operating environment that was released on 20 November 1985. It was Microsoft's first attempt to implement a Computer multitasking graphical user interface-based operating environment on the personal computer platform....
    • Windows 2.0
      Windows 2.0

      Windows 2.0 was a 16-bit Microsoft Windows graphical user interface-based operating environment that superseded Windows 1.0. Windows 2.0 was supplemented by Windows 2.1x and Windows 2.1x in 1988....
    • Windows 3.0
      Windows 3.0

      Windows 3.0 is the third major release of Microsoft Microsoft Windows, and was released on 22 May 1990. It became the first widely successful version of Windows and a powerful rival to Macintosh and the Commodore Amiga on the GUI front....
       (the first version to make substantial commercial impact)
    • Windows 3.1x
      Windows 3.1x

      Windows 3.1x is a line of operating systems produced by Microsoft for use on personal computers. The line began with Windows 3.1, which was released in March 1992 as a successor to Windows 3.0....
    • Windows 3.2 (Chinese-only release)
  • Windows 9x family
    • Windows 95
      Windows 95

      Windows 95 is a consumer-oriented graphical user interface-based operating system. It was released on August 24, 1995 by Microsoft, and was a significant progression from the company's previous Microsoft Windows products....
       (aka Windows 4.0) (codename: Chicago)
    • Windows 98
      Windows 98

      Windows 98 is a graphical operating system released on 25 June 1998 by Microsoft and the successor to Windows 95. Like its predecessor, it is a hybrid 16-bit application/32-bit application monolithic product based on MS-DOS....
       (aka Windows 4.1) (codename: Memphis)
    • Windows Millennium Edition (often shortened to Windows Me) (aka Windows 4.9)
  • OS/2
    OS/2

    OS/2 is a computer operating system, initially created by Microsoft and IBM, then later developed by IBM exclusively. The name stands for "Operating System/2," because it was introduced as part of the same generation change release as IBM's "IBM Personal System/2 " line of second-generation personal computers....
     (developed jointly with IBM)
  • Windows NT
    Windows NT

    Windows NT is a family of operating systems produced by Microsoft, the first version of which was released in July 1993. It was originally designed to be a powerful high-level-language-based, processor-independent, multiprocessing, multiuser operating system with features comparable to Unix....
    • Windows NT 3.1
      Windows NT 3.1

      Windows NT 3.1 is the first release of Microsoft's Windows NT line of Server and business desktop operating systems, and was released to manufacturing on 27 July 1993....
    • Windows NT 3.5
      Windows NT 3.5

      Windows NT 3.5 is the second release of the Microsoft Windows NT operating system. It was released on September 21 1994.One of the primary goals during Windows NT 3.5's development was to increase the speed of the operating system; as a result, the project was given the codename "Daytona" in reference to the Daytona International Speedway...
    • Windows NT 3.51
      Windows NT 3.51

      Windows NT 3.51 is the third release of Microsoft's Windows NT line of operating systems. It was released on May 30 1995, nine months after Windows NT 3.5....
    • Windows NT 4.0
      Windows NT 4.0

      Windows NT 4.0 is a Preemption , Graphical user interface and business-oriented operating system designed to work with either uniprocessor or Symmetric multiprocessing computers....
    • Windows 2000
      Windows 2000

      Windows 2000 is a line of operating systems produced by Microsoft for use on business desktops, Laptop, and Server . Released on 17 February, 2000, it was the successor to Windows NT 4.0, and is the final release of Microsoft Windows to display the "Windows NT" designation....
       (aka Windows NT 5.0)
    • Windows XP
      Windows XP

      Windows XP is a line of operating systems produced by Microsoft for use on personal computers, including home and business desktops, laptop, and media centers....
       (aka Windows NT 5.1) (codename: Whistler)
    • Windows Server 2003
      Windows Server 2003

      Windows Server 2003 is a Server operating system produced by Microsoft. Introduced on 24 April 2003 as the successor to Windows 2000 Server, it is considered by Microsoft to be the cornerstone of its Windows Server System line of business server products....
       (aka Windows NT 5.2) (codename: Whistler Server)
    • Windows Fundamentals for Legacy PCs
      Windows Fundamentals for Legacy PCs

      Windows Fundamentals for Legacy PCs is a thin client operating system from Microsoft, based on Windows XP editions#Windows XP Embedded, but optimized for older, less powerful Computer hardware....
    • Windows Vista
      Windows Vista

      Windows Vista is one member in a family of operating systems developed by Microsoft for use on personal computers, including home and business Desktop computer, laptops, Tablet PCs, and media center PCs....
       (aka Windows NT 6.0) (codename: Longhorn)
    • Windows Home Server
      Windows Home Server

      Windows Home Server, code-named Quattro, is a home server operating system from Microsoft. Announced on 7 January 2007, at the Consumer Electronics Show by Bill Gates, Windows Home Server is intended to be a solution for homes with multiple connected PCs to offer file sharing, automated backups, and remote access....
    • Windows Server 2008 (aka Windows NT 6.0) (codename: Longhorn Server)
    • Windows 7 (previously codenamed Blackcomb, then Vienna)
    • Windows Preinstallation Environment (WinPE)
      Windows Preinstallation Environment

      Windows Preinstallation Environment is a lightweight version of Windows XP, Windows Server 2003 or Windows Vista that is used for the deployment of workstations and servers....
  • Singularity
    Singularity (operating system)

    Singularity is an experimental operating system being built by Microsoft Research since 2003. It is intended as a highly-Dependability OS in which the kernel , device drivers, and applications are all written in managed code....
     - A research operating system written mostly in managed code
    Managed code

    Managed code is Source code that executes under the management of a virtual machine, unlike unmanaged code, which is executed directly by the computer's Central processing unit....
     (C#)
  • Midori
    Midori (operating system)

    Midori is the code name for a managed code operating system being developed by Microsoft Research. It has been reported to be a possible commercial implementation of the Singularity operating system, a research project started in 2003 to build a highly-Dependability operating system in which the kernel , device drivers, and applications are...
     - A managed code operating system


Novell
Novell

Novell Inc. is a global software corporation based in the United States specializing in enterprise operating systems such as SUSE Linux distributions and Novell NetWare; identity, security and systems management solutions; and collaboration solutions....


  • NetWare network operating system providing high-performance network services. Has been superseded by Open Enterprise Server line, which can be based on NetWare or Linux to provide the same set of services.
  • Open Enterprise Server
    Novell Open Enterprise Server

    Novell Open Enterprise Server is the successor product to Novell's NetWare operating system, and is a NOS, or network operating system. Originally released in March 2005, the current release is OES 2....
    , the successor to NetWare.
  • SUSE Linux
    SUSE Linux

    SUSE is a major retail operating system, produced worldwide and supported by Novell, Inc. SUSE is also a founding member of the Desktop Linux Consortium....
      acquired by Novell which has adopted it as its core infrastructure. Novell now is a prime contributor to open source projects based on Linux.


QANTEL

  • BEST
    Best

    Best is a municipality and a village in the southern Netherlands. It's situated northwest of the city Eindhoven, and Best is also part of the agglomeration of this city....
     - Business Executive System for Timesharing


RCA

  • TSOS
    Time Sharing Operating System

    TSOS stands for Time Sharing Operating System; it was an operating system for RCA mainframes of the RCA Spectra 70 series.RCA was in the computer business until 1971....
    , first OS supporting virtual addressing of the main storage and support for both timeshare and batch interface


SCO / The SCO Group


  • Xenix
    Xenix

    Xenix is a version of the Unix operating system, licensed by Microsoft from AT&T in the late 1970s. The Santa Cruz Operation later acquired exclusive rights to the software, and eventually began distributing it as SCO UNIX....
    , Unix System III based distribution for the Intel 8086/8088 architecture
  • Xenix
    Xenix

    Xenix is a version of the Unix operating system, licensed by Microsoft from AT&T in the late 1970s. The Santa Cruz Operation later acquired exclusive rights to the software, and eventually began distributing it as SCO UNIX....
     286, Unix System V Release 2 based distribution for the Intel 80286 architecture
  • Xenix
    Xenix

    Xenix is a version of the Unix operating system, licensed by Microsoft from AT&T in the late 1970s. The Santa Cruz Operation later acquired exclusive rights to the software, and eventually began distributing it as SCO UNIX....
     386, Unix System V Release 2 based distribution for the Intel 80386 architecture
  • SCO Unix, SCO UNIX System V/386 was the first volume commercial product licensed by AT&T to use the UNIX System trademark (1989). Derived from AT&T System V Release 3.2 with an infusion of Xenix device drivers and utilities plus most of the SVR4 features
  • SCO Open Desktop, the first 32-bit graphical user interface for UNIX Systems running on Intel processor-based computers. Based on SCO Unix
  • SCO OpenServer
    SCO OpenServer

    SCO OpenServer, previously SCO UNIX and SCO Open Desktop , is a closed source version of the Unix computer operating system developed by Santa Cruz Operation and now maintained by the SCO Group....
     5, AT&T UNIX System V Release 3 based
  • UnixWare
    UnixWare

    UnixWare is a Unix operating system maintained by The SCO Group . Unixware is typically deployed as a Server rather than Desktop computer. Binary distributions of UnixWare are available for x86 architecture computers....
     2.x, based on AT&T System V Release 4.2MP
  • UnixWare
    UnixWare

    UnixWare is a Unix operating system maintained by The SCO Group . Unixware is typically deployed as a Server rather than Desktop computer. Binary distributions of UnixWare are available for x86 architecture computers....
     7, UnixWare 2 kernel plus parts of 3.2v5 (UnixWare 2 + OpenServer 5 = UnixWare 7). Referred to by SCO as SVR5
  • SCO OpenServer
    SCO OpenServer

    SCO OpenServer, previously SCO UNIX and SCO Open Desktop , is a closed source version of the Unix computer operating system developed by Santa Cruz Operation and now maintained by the SCO Group....
     6, SVR5 (UnixWare 7) based kernel with SCO OpenServer 5 application and binary compatibility, system administration, and user environments


Unicoi Systems

  • Fusion RTOS highly prolific, license free Real-time operating system.
  • DSPOS was the original project which would become the royalty free Fusion RTOS.


Wind River Systems

  • VxWorks
    VxWorks

    VxWorks is a real-time operating system operating system made and sold by Wind River Systems of Alameda, California, California, USA.VxWorks is designed for use in embedded systems....
     Small footprint, scalable, high-performance RTOS


Non-standard languages

  • The Mesa programming language
    Mesa programming language

    Mesa was an innovative computer programming programming language developed at PARC in the late 1970s . The language was named after the mesas of the American Southwest, referring to its design intent to be a high-level programming language....
     was used to implement the Pilot
    Pilot (operating system)

    Pilot was a single-user, multitasking operating system designed by PARC in early 1977. Pilot was written in the Mesa programming language, totalling about 24,000 Source lines of code....
     operating system, used in Xerox Star
    Xerox Star

    The Star workstation, officially known as the Xerox 8010 Information System, was introduced by Xerox Corporation in 1981. It was the first commercial system to incorporate various technologies that today have become commonplace in personal computers, including a raster graphics display, a window-based graphical user interface, icon , f...
     workstations.
  • PERQ
    PERQ

    The PERQ, also referred to as the Three Rivers PERQ or ICL PERQ, was a pioneering workstation computer produced in the early 1980s....
     Operating System (POS) was written in PERQ Pascal
    Pascal (programming language)

    Pascal is an influential imperative programming and Procedural programming programming language, designed in 1968/9 and published in 1970 by Niklaus Wirth as a small and efficient language intended to encourage good programming practices using structured programming and data structure....
    .


Lisp-based

  • LISP machine
    Lisp machine

    Lisp machines were general-purpose computers designed to efficiently run Lisp programming language as their main programming language. In a sense, they were the first commercial single-user Computer workstation....
     Operating Systems ran on specialized processors with support for execution of Lisp code
    • Symbolics
      Symbolics

      Symbolics refers to two companies: now-defunct computer manufacturer Symbolics, Inc., and a privately-held company that acquired the assets of the former company and continues to sell and maintain the Open Genera Lisp system and the Macsyma computer algebra system....
       Genera written in a systems dialect of the Lisp programming language called ZetaLisp
      ZetaLisp

      ZetaLisp was the name Symbolics gave to their dialect of Lisp programming language on their Lisp Machine models, to distinguish it from the MIT version, which was called Lisp Machine Lisp....
       and Symbolics Common Lisp
      Common Lisp

      Common Lisp, commonly abbreviated CL, is a dialect of the Lisp programming language, published in American National Standards Institute standard document Information Technology - Programming Language - Common Lisp, formerly X3.226-1994 ....
      . Genera was ported to a virtual machine for the DEC Alpha
      DEC Alpha

      Alpha, originally known as Alpha AXP, was a 64-bit reduced instruction set computer instruction set architecture developed by Digital Equipment Corporation , designed to replace the 32-bit VAX complex instruction set computer ISA and its implementations....
       line of computers.
    • Texas Instruments
      Texas Instruments

      Texas Instruments , better known in the electronics industry as TI, is an United States company based in Dallas, Texas, Texas, United States, renowned for developing and commercializing semiconductor and computer technology....
      ' Explorer Lisp machine
      Lisp machine

      Lisp machines were general-purpose computers designed to efficiently run Lisp programming language as their main programming language. In a sense, they were the first commercial single-user Computer workstation....
       workstations also had systems code written in Lisp Machine Lisp
      Lisp Machine Lisp

      Lisp Machine Lisp is a dialect of the Lisp programming language, a direct descendant of Maclisp, and was initially developed in the mid to late 1970s as the systems programming language for the Massachusetts Institute of Technology Lisp machines....
      .
    • The Xerox
      Xerox

      Xerox Corporation is a global document management company which manufactures and sells a range of color and black-and-white Computer printer, multifunction systems, photo copiers, digital production printing presses, and related consulting services and supplies....
       1100 series of Lisp machines ran an operating system written in Interlisp
      Interlisp

      Interlisp was a programming environment built around a version of the Lisp programming language. Interlisp development began in 1967 at Bolt, Beranek and Newman in Cambridge, Massachusetts as BBN LISP, which ran on PDP-10 machines running the TENEX operating system....
       that was also ported to virtual machine called "Medley."
    • Lisp Machines, Inc. also known as LMI, also ran an operating system based on MIT's Lisp Machine Lisp
      Lisp Machine Lisp

      Lisp Machine Lisp is a dialect of the Lisp programming language, a direct descendant of Maclisp, and was initially developed in the mid to late 1970s as the systems programming language for the Massachusetts Institute of Technology Lisp machines....
      .


Other

  • EOS (Operating System)
    EOS (operating system)

    EOS was the name of an operating system developed by ETA Systems for use in their ETA10 line of supercomputers in the 1980s.EOS was preceded by and was binary executable compatible with the CDC VSOS operating system for CDC Cyber....
    , developed by ETA Systems
    ETA Systems

    ETA Systems was a supercomputer company spun-off from Control Data Corporation in the early 1980s in order to regain a footing in the supercomputer business....
     for use in their ETA-10 line of supercomputer
    Supercomputer

    A supercomputer is a computer that is at the frontline of current processing capacity, particularly speed of calculation. Supercomputers introduced in the 1960s were designed primarily by Seymour Cray at Control Data Corporation , and led the market into the 1970s until Cray left to form his own company, Cray Research....
    s
  • EMBOS, developed by Elxsi
    Elxsi

    Elxsi was a minicomputer manufacturing company established in the late 1970s along with a host of other competitors . The Elxsi processor was an Emitter Coupled Logic design that featured a 50 nanosecond clock, a 25 nanosecond backpanel bus, IEEE floating point arithmetic and a 64-bit architecture....
     for use on their mini-supercomputers
  • GCOS is a proprietary Operating System originally developed by General Electric
    General Electric

    The General Electric Company, or GE is a multinational corporation United States technology and Service s conglomerate incorporated in the State of New York....
  • PC-MOS/386
    PC-MOS/386

    PC-MOS/386 was a multi-user, computer multitasking operating system produced by The Software Link. It will run much MS-DOS software on the host machine or a computer terminal connected to it....
     - DOS-like, but multiuser/multitasking
  • SINTRAN III
    SINTRAN III

    SINTRAN III was a real-time operating system, multitasking, multi-user operating system used with Norsk Data computers from 1974. Unlike its predecessors SINTRAN I and II, it was entirely written by Norsk Data....
     - an operating system used with Norsk Data
    Norsk Data

    Norsk Data was a computer manufacturer located in Oslo, Norway. Existing from 1967 to 1992, it had its most active period in the years from the early 1970s to the late 1980s....
     computers.
  • THEOS
    THEOS

    THEOS, which transcribes to "God" in Greek, is an operating system which started out as OASIS operating system, a microcomputer operating system for small computers that use the Z80 processor....
  • TinyOS
    TinyOS

    TinyOS is a free software and open source software component-based operating system and platform targeting wireless sensor networks . TinyOS is an embedded operating system written in the nesC as a set of cooperating tasks and processes....
  • TRS-DOS
    TRS-DOS

    TRS-DOS was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 micro-computers that were sold through Radio Shack through the late 1970s and early 1980s....
     A floppy-disk-oriented OS supplied by Tandy/Radio Shack for their Z80-based line of personal computers.
  • TX990/TXDS, DX10
    DX10

    DX10 was a general purpose, disk based, computer multitasking operating system for the Texas Instruments TI-990 minicomputers using the memory mapping feature....
     and DNOS - proprietary operating systems for TI-990
    TI-990

    The TI-990 was a series of 16-bit minicomputers sold by Texas Instruments in the 1970s and 1980s. The TI-990 was a replacement for TI's earlier minicomputer systems, the TI-960 and the TI-980....
     minicomputers
  • MAI Basic Four
    MAI Basic Four

    MAI Basic Four refers to a variety of Business Basic, the computers that ran it, and the company that sold them .MAI Basic Four Business Basic was one of the first commercially available business BASIC interpreters....
     - An OS implementing Business Basic
    Business Basic

    Business Basic is the name given collectively to the variants of BASIC which were specialised for business use on mini-computers in the 1970s. Business Basics added indexed file access methods to the normal set of BASIC commands, and were optimised for other input/output access....
     from MAI Systems.
  • Michigan Terminal System
    Michigan Terminal System

    Michigan Terminal System is an operating system for the IBM System/360 and its successors that was developed jointly by the following institutions:...
     - Developed by a group of American universities for IBM 360 series mainframes
  • MUSIC/SP
    MUSIC/SP

    MUSIC/SP was developed at McGill University in the late 1960s from an IBM system called RAX . The system ran on IBM System/360, System/370, and IBM 4300 series IBM mainframe hardware, and offered novel features such as file access control and data compression....
     (an operating system developed for the S/370, running normally under VM)
  • TSX-32
    TSX-32

    TSX-32 is a general purpose 32-bit multi-user Computer multitasking operating system for x86 architecture platform, with a Command line interface user interface....
    , a 32-bit operating system for x86 platform.
  • OS ES An operating system for ES EVM
    ES EVM

    ES EVM was a series of clone of IBM's System/360 and System/370 mainframes, released in the Comecon countries under the initiative of the Soviet Union since the 1960s....
  • Prolog-Dispatcher - used to control Soviet Buran
    Buran

    Buran may refer to:* Buran , a Soviet space shuttle**Buran program, which developed the spacecraft* Buran , a wind which blows across eastern Asia...
     space ship.


Other proprietary Unix-like and POSIX-compliant
  • Aegis
    Domain/OS

    Domain/OS is the operating system used by the Apollo/Domain line of workstations manufactured by Apollo Computer, Inc. during the late 1980s, as the successor to the one previously used, AEGIS....
     (Apollo Computer
    Apollo Computer

    Apollo Computer, Inc., founded 1980 in Chelmsford, Massachusetts by William Poduska , developed and produced Apollo/Domain workstations in the 1980s....
    )
  • Amiga Unix
    Amiga Unix

    Commodore International, in 1990, did a full port of AT&T Unix System V for the Amiga computer family , informally known as Amix. Bundled with the Amiga 3000UX, Commodore's Unix was one of the first ports of SVR4 to the 68k architecture....
     (Amiga ports of Unix System V release 3.2 with Amiga A2500UX and SVR4 with Amiga A3000UX. Started in 1989, last version was in 1992)
  • Clix
    Clix

    Clix can be:* Clix , a Portuguese triple play brand* Axe #Release of Clix, a deodorant* iriver clix, rebrand of the iriver U10, a multimedia player...
     (Intergraph's System V implementation)
  • Coherent
    Coherent (operating system)

    The Coherent operating system was a Unix Version 7 Unix clone by the now-defunct Mark Williams Company, originally produced for the PDP-11 in 1980....
     (Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     OS from Mark Williams Co. for PC class computers)
  • DC/OSx
    DC/OSx

    DC/OSx was an operating system for MIPS architecture based systems developed by Pyramid Technology. It ran on its Nile series of Symmetric multiprocessing machines and was a port of AT&T UNIX System V ....
     (DataCenter/OSx was an operating system for MIPS
    MIPS architecture

    MIPS is a RISC instruction set architecture developed by MIPS Technologies . In the mid to late 1990s, it was estimated that one in three RISC microprocessors produced were MIPS implementations....
     based systems developed by Pyramid Technology
    Pyramid Technology

    Pyramid Technology was a computer company that produced a number of RISC-based minicomputers at the upper end of the performance range. They also became the second company to ship a multiprocessor Unix system , in 1985, which formed the basis of their product line into the early 1990s....
    )
  • DG/UX
    DG/UX

    DG/UX was a Unix operating system developed by Data General for its Eclipse MV minicomputer line, and later the Data General AViiON computer workstation and server line ....
     (Data General Corp)
  • DNIX
    DNIX

    DNIX was a Unix-like real-time operating system operating system from the Swedish company Dataindustrier AB . A version called ABCenix was also developed for the ABC1600 computer from Luxor....
     from DIAB
    Diab

    Diab is a village in the Bassar in the Kara Region of north-western Togo.ReferencesExternal links*...
  • DSPnano RTOS
    DSPnano RTOS

    DSPnano is an embedded real-time operating system which is 100% compatible with POSIX and offers a tiny tiny embedded Linux compatible solution. It was first created in 1996 and was one of the first pthread based real-time kernels....
     (POSIX nanokernel, DSP Optimized, Open Source)
  • Idris workalike from Whitesmiths
  • INTERACTIVE UNIX
    INTERACTIVE UNIX

    INTERACTIVE UNIX System V/386 is a porting of the UNIX System V operating system for Intel x86 processors.The system was first released by INTERACTIVE Systems Corporation as 386/ix in 1985....
     (a port
    Porting

    In computer science, porting is the process of adapting software so that an executable Computer program can be created for a computing environment that is different from the one for which it was originally designed ....
     of the UNIX System V
    UNIX System V

    Unix System V, commonly abbreviated SysV , is one of the versions of the Unix operating system. It was originally developed by AT&T and first released in 1983....
     operating system
    Operating system

    An operating system is an interface between hardware and applications; it is responsible for the management and coordination of activities and the sharing of the limited resources of the computer....
     for Intel x86 by INTERACTIVE Systems Corporation
    INTERACTIVE Systems Corporation

    INTERACTIVE Systems Corporation was a software company, known for their versions of the Unix operating system.In 1977, ISC was the first commercial Unix vendor, selling IS/1, a Version 6 Unix variant enhanced for office automation which ran on most PDP-11's.....
    )
  • IRIX
    IRIX

    IRIX is a computer operating system developed by Silicon Graphics, Inc. to run natively on their 32- and 64-bit MIPS architecture workstations and servers....
     from SGI
    Silicon Graphics

    Silicon Graphics, Inc. is a company manufacturer high-performance computing solutions, including computer hardware and computer software. SGI was founded by James H....
  • MeikOS
  • NeXTSTEP
    NEXTSTEP

    Nextstep was the original Object-oriented operating system, computer multitasking operating system that NeXT developed to run on its range of proprietary computers, such as the NeXTcube....
     (developed by NeXT
    NeXT

    NeXT, Inc. was an American computer company headquartered in Redwood City, California, California, that developed and manufactured a series of computer workstations intended for the higher education and business markets....
    ; a Unix-based OS based on the Mach microkernel)
  • OS-9
    OS-9

    OS-9 is a family of real-time computing, process , computer multitasking, multi-user, Unix-like operating systems, developed in the 1980s, originally by Microware for the Motorola 6809 microprocessor....
     Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     RTOS. (OS from Microware
    Microware

    Microware is a United States corporation that produced the OS-9 Real-time computing operating system.Microware Systems Corporation existed as a separate entity from 1977 until September 2001, when it was bought by RadiSys, and became a division of that company....
     for Motorola 6809
    Motorola 6809

    The Motorola 6809 is an 8-bit microprocessor central processing unit from Motorola, introduced circa 1977-78. It was a major advance over both its predecessor, the Motorola 6800, and the related, MOS Technology 6502....
     based microcomputers)
  • OS9/68K Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     RTOS. (OS from Microware
    Microware

    Microware is a United States corporation that produced the OS-9 Real-time computing operating system.Microware Systems Corporation existed as a separate entity from 1977 until September 2001, when it was bought by RadiSys, and became a division of that company....
     for Motorola 680x0 based microcomputers; based on OS-9
    OS-9

    OS-9 is a family of real-time computing, process , computer multitasking, multi-user, Unix-like operating systems, developed in the 1980s, originally by Microware for the Motorola 6809 microprocessor....
    )
  • OS-9000 Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     RTOS. (OS from Microware
    Microware

    Microware is a United States corporation that produced the OS-9 Real-time computing operating system.Microware Systems Corporation existed as a separate entity from 1977 until September 2001, when it was bought by RadiSys, and became a division of that company....
     for Intel x86 based microcomputers; based on OS-9
    OS-9

    OS-9 is a family of real-time computing, process , computer multitasking, multi-user, Unix-like operating systems, developed in the 1980s, originally by Microware for the Motorola 6809 microprocessor....
    , written in C
    C (programming language)

    C is a general-purpose computer programming language originally developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories to implement the Unix operating system....
    )
  • OSF/1 (developed into a commercial offering by Digital Equipment Corporation
    Digital Equipment Corporation

    Digital Equipment Corporation was a pioneering United States company in the computer industry. It is often referred to within the computing industry as DEC ....
    )
  • OPENSTEP
    OpenStep

    OpenStep is an object-oriented application programming interface specification for an object-oriented operating system that uses any modern operating system as its core, principally developed by NeXT with Sun Microsystems....
  • QNX
    QNX

    QNX is a commercial Unix-like real-time operating system, aimed primarily at the embedded systems market. On September 12, 2007, the source of the QNX kernel was released for non-commercial use....
     (POSIX, microkernel OS; usually a real time embedded OS)
  • Pardus
    Pardus

    Pardus can mean one of several things:* Pardus , a GNU/Linux distribution developed in Turkey* Leopard, the scientific name for the Leopard* Pardus , graphical browser-based MMORPG...
     (Turkish Linux)
  • Rhapsody (an early form of Mac OS X)
  • RISC/os
    RISC/os

    RISC/os was a UNIX operating system distributed by MIPS Technologies during the 1980s and 1990s for use with their computer workstations and server s, such as the M/120 server or MIPS Magnum workstation....
     (a port by MIPS
    MIPS Technologies

    MIPS Technologies, Inc. , formerly MIPS Computer Systems, is most widely known for developing the MIPS architecture and a series of pioneering Reduced instruction set computer Central processing unit....
     of 4.3BSD to the RISC MIPS architecture
    MIPS architecture

    MIPS is a RISC instruction set architecture developed by MIPS Technologies . In the mid to late 1990s, it was estimated that one in three RISC microprocessors produced were MIPS implementations....
    )
  • RMX
    RMX

    iRMX is a real-time operating system designed specifically for use with the Intel 8080 and Intel 8086 family of processors. It is an acronym for Real-time Multitasking eXecutive....
  • SCO UNIX (from SCO, bought by Caldera who renamed themselves SCO Group
    SCO Group

    The SCO Group, Inc. is a software company formerly called Caldera Systems and Caldera International. After acquiring the Santa Cruz Operation Server Software and Services divisions, as well as UnixWare and OpenServer technologies, the company changed its focus to Unix....
    )
  • SINIX
    SINIX

    SINIX was a version of the Unix operating system from Siemens Nixdorf Informationssysteme. Supersedes SIRM OS and Pyramid Technology's DC/OSx. Its last release under the SINIX name was version 5.43 in 1995....
     (a port by SNI
    Siemens Nixdorf Informationssysteme

    Siemens Nixdorf Informationssysteme, Aktiengesellschaft was formed in 1990 by the merger of Nixdorf Computer AG and the Siemens AG' Data Information Services division....
     of Unix
    Unix

    Unix is a computer operating system originally developed in 1969 by a group of American Telephone & Telegraph employees at Bell Labs, including Ken Thompson , Dennis Ritchie, Douglas McIlroy, and Joe Ossanna....
     to the RISC MIPS architecture
    MIPS architecture

    MIPS is a RISC instruction set architecture developed by MIPS Technologies . In the mid to late 1990s, it was estimated that one in three RISC microprocessors produced were MIPS implementations....
    )
  • Solaris
    Solaris Operating System

    Solaris is a Unix-based operating system introduced by Sun Microsystems in 1992 as the successor to SunOS.Solaris is known for its scalability, especially on SPARC systems, and for originating many innovative features such as DTrace and ZFS....
     (Sun's System V-based replacement for SunOS)
  • SunOS
    SunOS

    SunOS is a version of the Unix operating system developed by Sun Microsystems for their workstation and server computer systems. The SunOS name is usually only used to refer to versions 1.0 to 4.1.4 of SunOS....
     (BSD-based Unix system used on early Sun hardware)
  • SUPER-UX
    SUPER-UX

    SUPER-UX, sometimes also annotated SuperUx or Super-UX, is the version of the Unix operating system that is used on NEC Corporation SX architecture supercomputers....
     (a port of System V Release 4.2MP
    UNIX System V

    Unix System V, commonly abbreviated SysV , is one of the versions of the Unix operating system. It was originally developed by AT&T and first released in 1983....
     with features adopted from BSD
    Berkeley Software Distribution

    Berkeley Software Distribution is the Unix operating system derivative developed and distributed by the Computer Systems Research Group of the University of California, Berkeley, from 1977 to 1995....
     and Linux
    Linux

    Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
     for NEC SX architecture
    SX architecture

    SX architecture is the name of a series of supercomputers developed by NEC Corporation. In the USA, they have sometimes been marketed jointly with Cray....
     supercomputer
    Supercomputer

    A supercomputer is a computer that is at the frontline of current processing capacity, particularly speed of calculation. Supercomputers introduced in the 1960s were designed primarily by Seymour Cray at Control Data Corporation , and led the market into the 1970s until Cray left to form his own company, Cray Research....
    s)
  • System V (a release of AT&T Unix, 'SVR4' was the 4th minor release)
  • System V/AT, 386
    Microport

    Microport was a Scotts Valley, California-based computer software company which ushered in the era of low-cost UNIX technology. It later moved away from this emphasis; but nonetheless, some claim it played a key role in enabling what later became known as the Free Software movement....
     (The first version of AT&T System V UNIX on the IBM 286 and 386 PCs, ported and sold by Microport
    Microport

    Microport was a Scotts Valley, California-based computer software company which ushered in the era of low-cost UNIX technology. It later moved away from this emphasis; but nonetheless, some claim it played a key role in enabling what later became known as the Free Software movement....
    )
  • Trusted Solaris
    Trusted Solaris

    Trusted Solaris is a security-evaluated operating system based on Solaris Operating System by Sun Microsystems, featuring a mandatory access control model....
     (Solaris with kernel and other enhancements to support multilevel security
    Multilevel security

    Multilevel Security is the application of a computer system to process information with different sensitivities , permit simultaneous access by users with different security clearances and needs-to-know, and prevent users from obtaining access to information for which they lack authorization....
    )
  • UniFlex
    UniFlex

    UniFlex is a Unix-like operating system developed by Technical Systems Consultants for multitasking, multiprocessing for the Motorola Motorola 6809 family....
     (Unix-like
    Unix-like

    A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification....
     OS from TSC
    TSC

    TSC is an acronym for:* Technology Service Corps, a workforce development program for talented youth in the New York city area* Technology Service Corporation, an employee-owned high-technology consulting company...
     for DMA-capable, extended addresses, Motorola 6809 based computers; e.g. SWTPC
    SWTPC

    The United States company SWTPC started in 1964 as DEMCO . It was incorporated in 1967 as Southwest Technical Products Corporation of San Antonio, Texas....
    , GIMIX, …)
  • Unicos
    Unicos

    UNICOS is the name of a range of Unix-like operating system variants developed by Cray Inc. for its supercomputers. UNICOS is the successor of the Cray Operating System ....
     (the version of Unix designed for Cray Supercomputers, mainly geared to vector calculations)
  • Unison RTOS (Multicore RTOS with DSP Optimization)


SDS (Scientific Data Systems)

  • CP
    CP

    Cp, CP, cp, cP may be:...
     Control Program. SDS later acquired by Xerox, then Honeywell.


TRON Project

  • TRON
    TRON Project

    TRON is an open real-time operating system kernel design, and is an acronym for "The Real-time Operating system Nucleus". The project was started by Ken Sakamura of the University of Tokyo in 1984....
     (open real-time operating system
    Real-time operating system

    A Real-Time Operating System is a Computer multitasking operating system intended for real-time computing applications. Such applications include embedded systems , industrial robots, spacecraft, industrial control , and scientific research equipment....
     kernel
    Kernel (computing)

    In computing, the kernel is the central component of most computer operating systems. Its responsibilities include managing the system's resources ....
    )


UNIVAC
UNIVAC

UNIVAC is the name of a business unit and division of the Remington Rand company formed by the 1950 purchase of the Eckert-Mauchly Computer Corporation, founded four years earlier by ENIAC inventors J....
 (later Unisys)

  • EXEC I
    EXEC I

    EXEC I was UNIVAC's original operating system developed for the UNIVAC 1107....
  • EXEC II
    EXEC II

    EXEC II was an operating system developed for the UNIVAC 1107 by Computer Sciences Corporation while under contract to UNIVAC to develop the machine's COBOL compiler....
  • EXEC 8
    EXEC 8

    EXEC 8 was UNIVAC's operating system developed for the UNIVAC 1108 in 1964. It combined the best features of the earlier operating systems: EXEC I and EXEC II ....
     Ran on 1100 series.
  • VS/9
    VS/9

    VS/9 was a computer operating system available for the Univac 90/60, 90/70 and 90/80 mainframe computer during the late 1960s through 1980s. It provided the capability to allow both interactive and batch operations on the same computer....
    , successor to RCA TSOS
    TSOS

    TSOS may stand for* Traffic Signal Operations Specialist, a certification sponsored by the Transportation Professional Certification Board* Time Sharing Operating System, a software from RCA to run their Spectra computers...


Wavecom
Wavecom

Wavecom is a global technology company that develops and manufactures embedded wireless technology for Machine to Machine communication, enabling transmission and reception of data and voice communications using wireless cellular network operators....

  • Open AT OS
    Open AT OS

    Open AT OS is an operating system provided by Wavecom together with its CPUs.It basically provides what some other operating systems do, with the particularity to natively provide GSM related functions such as GSM voice calls or data transfer related APIs....


Non-proprietary


Unix-like


Research Unix-like and other POSIX-compliant
  • Minix
    Minix

    MINIX is a Unix-like computer operating system based on a microkernel Software architecture. Andrew S. Tanenbaum wrote the operating system to be used for educational purposes; MINIX also inspired the creation of the Linux kernel....
     (study OS developed by Andrew S. Tanenbaum
    Andrew S. Tanenbaum

    Andrew Stuart "Andy" Tanenbaum is a professor of computer science at the Vrije Universiteit, Amsterdam in the Netherlands. He is best known as the author of MINIX, a free Unix-like operating system for teaching purposes, and for his computer science textbooks, regarded as standard texts in the field....
     in the Netherlands
    Netherlands

    The Netherlands is a country that is part of the Kingdom of the Netherlands. It is a parliamentary democratic constitutional monarchy. The Netherlands is located in North-West Europe, and bordered by the North Sea to the north and west, Belgium to the south, and Germany to the east....
    )
  • Plan 9
    Plan 9 from Bell Labs

    Plan 9 from Bell Labs is a distributed operating system, primarily used for research. It was developed as the research successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002....
     (distributed OS developed at Bell Labs
    Bell Labs

    Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
    , based on original Unix design principles yet functionally different and going much further)
    • Inferno
      Inferno (operating system)

      Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
       (distributed OS derived from Plan 9
      Plan 9 from Bell Labs

      Plan 9 from Bell Labs is a distributed operating system, primarily used for research. It was developed as the research successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002....
      , originally from Bell Labs)
    • Plan B (distributed OS derived from Plan 9
      Plan 9 from Bell Labs

      Plan 9 from Bell Labs is a distributed operating system, primarily used for research. It was developed as the research successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002....
       and Off++ microkernel)
  • Solaris
    Solaris Operating System

    Solaris is a Unix-based operating system introduced by Sun Microsystems in 1992 as the successor to SunOS.Solaris is known for its scalability, especially on SPARC systems, and for originating many innovative features such as DTrace and ZFS....
    , contains original Unix (SVR4) code (code now open source
    Open source

    Open source is an approach to design, development, and distribution offering practical accessibility to a product's source . Some consider open source as one of various possible design approaches, while others consider it a critical Strategy element of their business operations....
     via OpenSolaris
    OpenSolaris

    File:Opensolaris-screenshot-2008-05.pngOpenSolaris is an open source operating system based on Sun Microsystems' Solaris . It is also the name of the project initiated by Sun to build a developer and user community around it....
     project)
  • Unix
    Unix

    Unix is a computer operating system originally developed in 1969 by a group of American Telephone & Telegraph employees at Bell Labs, including Ken Thompson , Dennis Ritchie, Douglas McIlroy, and Joe Ossanna....
     (OS developed at Bell Labs ca 1970 initially by Ken Thompson)
  • Xinu
    Xinu

    Xinu is a Unix-like operating system originally developed by Douglas Comer for instructional purposes at Purdue University in the 1980s. It has been ported to many hardware platforms, including the Digital Equipment Corporation PDP-11 and VAX systems, Sun Microsystems and Sun-3 workstations, Intel, PowerPC G3 and MIPS architecture....
    , (Study OS developed by Douglas E. Comer in the USA)


Free
Free software

Free Software or software libre is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and to prevent consumer-facing hardware...
/Open source
Open source

Open source is an approach to design, development, and distribution offering practical accessibility to a product's source . Some consider open source as one of various possible design approaches, while others consider it a critical Strategy element of their business operations....
 Unix-like
  • BSD
    Berkeley Software Distribution

    Berkeley Software Distribution is the Unix operating system derivative developed and distributed by the Computer Systems Research Group of the University of California, Berkeley, from 1977 to 1995....
     (Berkeley Software Distribution, a variant of Unix for DEC
    Digital Equipment Corporation

    Digital Equipment Corporation was a pioneering United States company in the computer industry. It is often referred to within the computing industry as DEC ....
     VAX
    VAX

    VAX was an instruction set architecture developed by Digital Equipment Corporation in the mid-1970s. A 32-bit complex instruction set computer ISA, it was designed to extend or replace DEC's various Programmed Data Processor ISAs....
     hardware)
    • FreeBSD
      FreeBSD

      FreeBSD is a Unix-like free software operating system descended from AT&T Unix via the Berkeley Software Distribution branch through the 386BSD and Berkeley Software Distribution#4.4BSD and descendants operating systems....
       (one of the outgrowths of UC Regents' abandonment of CSRG's 'BSD Unix')
      • DesktopBSD
        DesktopBSD

        DesktopBSD is a UNIX-derivative, desktop computer-oriented operating system based on FreeBSD. Its goal is to combine the stability of FreeBSD with the ease-of-use of KDE, which is the default graphical user interface....
         FreeBSD distribution for desktop use
      • PC-BSD
        PC-BSD

        PC-BSD is a Unix-like, desktop-oriented operating system based on FreeBSD. It aims to be easy to install by using a graphical installation program, and easy and ready-to-use immediately by providing KDE as the default, pre-installed graphical user interface....
         FreeBSD distribution for desktop use
      • DragonFly BSD
        DragonFly BSD

        DragonFly BSD is a Free software Unix-like operating system created as a fork of FreeBSD 4.8. Matthew Dillon , a FreeBSD and Amiga developer since 1994, began work on DragonFly BSD in June 2003 and announced it on the FreeBSD mailing lists on July 16, 2003....
         forked from FreeBSD
    • NetBSD
      NetBSD

      NetBSD is a freely redistributable, open source version of the Unix-derivative Berkeley Software Distribution computer operating system. It was the second open source BSD descendant to be formally released, after 386BSD, and continues to be actively developed....
       (one of the outgrowths of UC Regents' abandonment of CSRG's 'BSD Unix')
      • OpenBSD
        OpenBSD

        OpenBSD is a Unix-like computer operating system descended from Berkeley Software Distribution , a Unix derivative developed at the University of California, Berkeley....
         forked from NetBSD
  • GNU
  • Linux
    Linux

    Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
  • OpenDarwin
  • OpenSolaris
    OpenSolaris

    File:Opensolaris-screenshot-2008-05.pngOpenSolaris is an open source operating system based on Sun Microsystems' Solaris . It is also the name of the project initiated by Sun to build a developer and user community around it....
    , contains original Unix (SVR4) code
  • SSS-PC Developed at Tokyo University
  • Syllable
    Syllable (operating system)

    Syllable is a Free software and open-source software operating system for Pentium and compatible processors. Its purpose is to create an easy-to-use desktop operating system for the home and small office user....
  • VSTa
    VSTa

    VSTa was an operating system with a microkernel architecture, with all device drivers and file systems residing in userspace mode. It is mostly POSIX compliant, except when POSIX compatibility got in the way of extensibility and modularity....
  • Jari OS
    Jari OS

    Jari OS is a microkernel based Real-time_computing operating system with multi-server architecture and Preemption kernel. The source code of Jari OS is published under GNU General Public License....
    , microkernel-based multi-server OS


Other
  • TUNIS
    Tunis

    Tunis is the Capital of the Tunisian Republic and also the Tunis Governorate, with a population of 1 200,000 in 2008 and over 3,980,500 in the municipal area....
     (University of Toronto)


Non-Unix-like


Research non-Unix-like
  • Amoeba
    Amoeba distributed operating system

    Amoeba is an open source microkernel-based distributed computing operating system developed by Andrew S. Tanenbaum and others at the Vrije Universiteit....
     (research OS by Andrew S. Tanenbaum
    Andrew S. Tanenbaum

    Andrew Stuart "Andy" Tanenbaum is a professor of computer science at the Vrije Universiteit, Amsterdam in the Netherlands. He is best known as the author of MINIX, a free Unix-like operating system for teaching purposes, and for his computer science textbooks, regarded as standard texts in the field....
    )
  • Croquet
    Croquet Project

    The Croquet Project is an international effort to promote the continued development of Croquet, a free software Computer software Platform and a Computer network operating system for developing and delivering deeply collaborative multi-user online Application software....
  • House
    House (operating system)

    House is an Acronym and initialism for the Haskell User's Operating System and Environment. It is an experimental operating system written in Haskell ....
     Haskell User's Operating System and Environment, research OS written in Haskell and C.
  • ILIOS
    ILIOS

    ILIOS is an acronym of InterLink Internet Operating System. It is an attempt to create a router-only operating system; one specifically oriented towards computer computer network purposes, especially routing....
     Research OS designed for routing
  • EROS
    Extremely Reliable Operating System

    EROS is an operating system developed by The EROS Group, LLC., the Johns Hopkins University, and the University of Pennsylvania. Interesting features include automatic data and process orthogonal persistence, some preliminary real-time operating system support, and capability-based security....
     microkernel, capability-based
    • CapROS
      CapROS

      CapROS is an open source operating system. It is a pure Capability-based security system that features automatic persistence of data and processes, even across system reboots....
       microkernel EROS successor.
    • Coyotos
      Coyotos

      Coyotos is a Capability-based security security-focused microkernel operating system being Software engineering by The EROS Group, LLC. It is a successor to the Extremely Reliable Operating System system that was created at the University of Pennsylvania and Johns Hopkins University....
       microkernel EROS successor, goal: be first formally verified OS.
  • L4
    L4 microkernel family

    L4 is a family of second-generation microkernels based on theoriginal designs and implementations by Germany computer scientist Jochen Liedtke....
     Second generation microkernel
  • Mach (from OS kernel research at Carnegie Mellon University
    Carnegie Mellon University

    Carnegie Mellon University is a top private university research university in Pittsburgh. Since its inception, Carnegie Mellon has grown into a world-renowned institution, with numerous programs that are frequently college and university rankings among the best in the world....
    ; see NeXTSTEP
    NEXTSTEP

    Nextstep was the original Object-oriented operating system, computer multitasking operating system that NeXT developed to run on its range of proprietary computers, such as the NeXTcube....
    )
  • MONADS capability-based OS designed to support the MONADS hardware projects
    • SPEEDOS (Secure Persistent Execution Environment for Distributed Object Systems) builds on MONADS ideas
  • Nemesis
    Nemesis (computing)

    Nemesis is an operating system designed by the University of Cambridge, the University of Glasgow, the Swedish Institute of Computer Science and Citrix Systems....
     Cambridge University research OS - detailed quality of service abilities.
  • Singularity
    Singularity (operating system)

    Singularity is an experimental operating system being built by Microsoft Research since 2003. It is intended as a highly-Dependability OS in which the kernel , device drivers, and applications are all written in managed code....
     - A research operating system written mostly in managed code
    Managed code

    Managed code is Source code that executes under the management of a virtual machine, unlike unmanaged code, which is executed directly by the computer's Central processing unit....
     (C#) by Microsoft
    Microsoft

    Microsoft Corporation is a multinational corporation computer technology corporation that develops, manufactures, licenses, and supports a wide range of computer software products for computing devices....
    .
  • Spring (research OS from Sun Microsystems)
  • V
    V (operating system)

    The V operating system is a Kernel operating system that was developed by faculty and students in the Distributed Systems Group at Stanford University in the 1980s, led primarily by Prof....
     from Stanford, early 1980s


Free
Free software

Free Software or software libre is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and to prevent consumer-facing hardware...
/Open source
Open source

Open source is an approach to design, development, and distribution offering practical accessibility to a product's source . Some consider open source as one of various possible design approaches, while others consider it a critical Strategy element of their business operations....
 non-Unix-like
  • FullPliant
    Pliant

    HistoryIn computer software programming languages history, Pliant is the first attempt to connect C and Lisp programming language branches....
     (programming language based)
  • FreeDOS
    FreeDOS

    FreeDOS is an operating system for IBM PC compatible computers. FreeDOS is made up of many different, separate programs that act as "packages" to the overall FreeDOS Project....
     (open source DOS variant)
  • FreeVMS
    FreeVMS

    FreeVMS is a free software clone of OpenVMS computer operating system, licensed under the terms of the GNU General Public License. As of 2008, the project is in the early stages of development....
     (open source VMS variant)
  • Haiku
    Haiku (operating system)

    Haiku, formerly known as OpenBeOS , is a free software and open source software project dedicated to the re-creation and continuation of BeOS on X86 architecture and PowerPC based computers....
     (open source inspired by BeOS
    BeOS

    BeOS was an operating system for personal computers which began development by Be Inc. in 1991. It was first written to run on BeBox hardware. BeOS was optimized for digital media work and was written to take advantage of modern hardware facilities such as symmetric multiprocessing by utilizing modular I/O bandwidth, pervasive multithreading,...
    , under development)
  • ReactOS
    ReactOS

    ReactOS is a computer operating system intended to be Application binary interface with application software and device drivers made for Microsoft Windows NT versions 5.x and up ....
     (Windows NT-compatible OS, in early development since 2001)
  • osFree (open source OS/2 implementation)


Disk Operating Systems

  • 86-DOS (developed at Seattle Computer Products by Tim Paterson for the new Intel 808x CPUs; licensed to Microsoft
    Microsoft

    Microsoft Corporation is a multinational corporation computer technology corporation that develops, manufactures, licenses, and supports a wide range of computer software products for computing devices....
    , became PC DOS/MS-DOS. Also known by its working title QDOS.)
    • PC DOS (IBM's DOS variant, developed jointly with Microsoft, versions 1.0 – 7, 2000)
    • MS-DOS
      MS-DOS

      MS-DOS is an operating system commercialized by Microsoft. It was the most commonly used member of the DOS family of operating systems and was the main operating system for personal computers during the 1980s....
       (Microsoft's DOS variant for OEM, developed jointly with IBM, versions 1.x – 6. Microsoft's now abandoned DOS variant)
  • DR-DOS
    DR-DOS

    DR-DOS is a DOS-type operating system for IBM PC-PC compatible personal computers, originally developed by Gary Kildall's Digital Research and derived from CP/M-86....
     (Digital Research's [later Novell, Caldera, ...] DOS variant)
    • Concurrent DOS
      Multiuser DOS

      Multiuser DOS is a soft Real-time operating system operating system for IBM PC-compatible microcomputers.An evolution of the older Concurrent CP/M and Concurrent DOS operating systems, it was originally developed by Digital Research....
       (Digital Research's first multiuser DOS variant)
    • Multiuser DOS
      Multiuser DOS

      Multiuser DOS is a soft Real-time operating system operating system for IBM PC-compatible microcomputers.An evolution of the older Concurrent CP/M and Concurrent DOS operating systems, it was originally developed by Digital Research....
       (Digital Research's [later CCI's. Real's/...] multiuser DOS variant)
  • FreeDOS
    FreeDOS

    FreeDOS is an operating system for IBM PC compatible computers. FreeDOS is made up of many different, separate programs that act as "packages" to the overall FreeDOS Project....
     (open source
    Open source

    Open source is an approach to design, development, and distribution offering practical accessibility to a product's source . Some consider open source as one of various possible design approaches, while others consider it a critical Strategy element of their business operations....
     DOS variant)
  • ProDOS
    ProDOS

    ProDOS was the name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, was the last official operating system usable by all Apple II series computers, and was distributed from 1983 to 1993....
     (operating system for the Apple II series computers)
  • PTS-DOS
    PTS-DOS

    PTS-DOS is a disk operating system, a DOS clone, developed in Russia by PhysTechSoft....
     (DOS variant by Russia
    Russia

    Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
    n company Phystechsoft)
  • RDOS
    RDOS

    RDOS, or the Real-time Disk Operating System, was a Real-time operating system operating system released in 1972 for the popular Data General Data General Nova and Data General Eclipse minicomputer....
     (Data General Corp)
    • TurboDOS (Software 2000, Inc.)
  • Multi-tasking user interfaces and environments for DOS
    • DESQview
      DESQview

      DESQview was a text mode computer multitasking program developed by Quarterdeck Office Systems which enjoyed modest popularity in the late 1980s and early 1990s....
      + QEMM 386 multi-tasking user interface for DOS
    • DESQView/X (X-windowing
      X Window System

      The X Window System is a computing software system and network protocol that provides a graphical user interface for networked computers. It implements the X Window System protocols and architecture and provides windowing system on raster graphics Visual display units and manages Keyboard and pointing device control functions....
       GUI for DOS)


Network

  • Cambridge Ring
    Cambridge Ring

    The Cambridge Ring was an experimental local area network architecture developed at the Cambridge University Computer Laboratory in the mid-late 1970s and early 1980s....
  • CSIRONET by (CSIRO
    Commonwealth Scientific and Industrial Research Organisation

    The Commonwealth Scientific and Industrial Research Organisation is the national government body for scientific research in Australia. It was founded in 1926 originally as the Advisory Council of Science and Industry....
    )
  • CTOS (Convergent Technologies
    Convergent Technologies (Unisys)

    Convergent Technologies was a company formed by a small group of people who left Intel Corporation and Xerox PARC in 1979.Convergent Technologies' first product was the IWS tower based on the Intel 8086, which ran Convergent Technologies Operating System - their first operating system....
    , later acquired by Unisys
    Unisys

    Unisys Corporation , based in Blue Bell, Pennsylvania, Pennsylvania, United States, and incorporated in Delaware, is a global provider of information technology services and programs....
    )
  • Data ONTAP by NetApp
  • SAN-OS by Cisco
    Cisco

    Cisco may refer to:Companies:* Cisco Systems, a computer networking company* Certis CISCO, corporatised entity of the former Commercial and Industrial Security Corporation in Singapore....
     (now NX-OS
    NX-OS

    "Cisco Systems NX-OS is a data center-class operating system built with modularity, resiliency, and serviceability at its foundation".It is based on MontaVista Software embedded Linux....
    )
  • Enterprise OS by McDATA
    Brocade Communications Systems

    Brocade, Inc. , based in Silicon Valley, designs, manufactures, and sells storage networking solutions and management applications for storage area networks and File Area Networking ....
  • Fabric OS
    Fabric OS

    In storage area networking, Fabric OS is a firmware for Brocade Communications Systems's Fibre Channel switches and Fibre Channel directors....
     by Brocade
    Brocade Communications Systems

    Brocade, Inc. , based in Silicon Valley, designs, manufactures, and sells storage networking solutions and management applications for storage area networks and File Area Networking ....
  • JUNOS
    Junos

    Junos may refer to:* Juno Award* JUNOS ...
     (Juniper Networks)
  • NetWare (networking OS by Novell
    Novell

    Novell Inc. is a global software corporation based in the United States specializing in enterprise operating systems such as SUSE Linux distributions and Novell NetWare; identity, security and systems management solutions; and collaboration solutions....
    )
  • NOS
    Network operating system

    A network operating system is Computer software that controls a Computer network and its message Traffic and Queue , controls access by multiple users to network resources such as files, and provides for certain administrative functions, including security....
     (developed by CDC
    Control Data Corporation

    Control Data Corporation was one of the pioneering supercomputer firms. For most of the 1960s, it built the fastest computers in the world by far, only losing that crown in the 1970s to what was effectively a spinoff, after Seymour Cray left the company to found Cray Research, Inc....
     for use in their Cyber line of supercomputers)
  • Novell Open Enterprise Server
    Novell Open Enterprise Server

    Novell Open Enterprise Server is the successor product to Novell's NetWare operating system, and is a NOS, or network operating system. Originally released in March 2005, the current release is OES 2....
     (Open Source networking OS by Novell
    Novell

    Novell Inc. is a global software corporation based in the United States specializing in enterprise operating systems such as SUSE Linux distributions and Novell NetWare; identity, security and systems management solutions; and collaboration solutions....
    . Can incorporate either SUSE Linux
    SUSE Linux

    SUSE is a major retail operating system, produced worldwide and supported by Novell, Inc. SUSE is also a founding member of the Desktop Linux Consortium....
     or Novell NetWare as its kernel).
  • OliOS
  • Plan 9
    Plan 9 from Bell Labs

    Plan 9 from Bell Labs is a distributed operating system, primarily used for research. It was developed as the research successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002....
     (distributed OS developed at Bell Labs
    Bell Labs

    Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
    , based on Unix design principles but not functionally identical)
    • Inferno
      Inferno (operating system)

      Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
       (distributed OS derived from Plan 9, originally from Bell Labs)
    • Plan B (distributed OS derived from Plan 9
      Plan 9 from Bell Labs

      Plan 9 from Bell Labs is a distributed operating system, primarily used for research. It was developed as the research successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002....
       and Off++ microkernel)
    • TurboDOS (Software 2000, Inc.)
  • XPATH OS by Brocade


Web operating systems


  • amoebaOS
  • DesktopTwo
    DesktopTwo

    Desktoptwo is a free Web desktop developed by that mimics the look, feel and functionality of the desktop environment of an operating system. The software is currently in Development stage#Beta stage....
  • G.ho.st
    G.ho.st

    G.ho.st is the trading name of Ghost Inc. and the service name and URL of the company's hosted computer operating system or WebOS service....
  • YouOS
    YouOS

    YouOS was a web desktop and web integrated development environment, developed by by WebShaka until June 2008.YouOS replicated the desktop environment of a modern operating system on a webpage, using JavaScript to communicate with the remote Server ....
  • Browser OS
  • eyeOS
    EyeOS

    eyeOS is an open source web desktop following the Cloud computing concept, written in mainly PHP, XML, and JavaScript. It acts as a platform for web applications written using the eyeOS Toolkit....
  • Jooce
  • Glide OS 3.0


Generic/commodity and other

  • BLIS/COBOL
    BLIS/COBOL

    BLIS/COBOL was an operating system that, unusually, was written in COBOL. It is the only such system to gain reasonably wide acceptance. It was optimised to compile business application written in COBOL....
  • Bluebottle
    Bluebottle OS

    Bluebottle, , is the name of the next generation Native Oberon, the Oberon operating system for bare PC hardware. It was developed at the ETH Z?rich....
     also known as AOS (a concurrent and active object update to the Oberon operating system
    Oberon operating system

    Oberon is an operating system, originally developed as part of the NS320xx-based Ceres workstation project; it is written entirely in the Oberon programming language....
    )
  • BS1000 by Siemens AG
    Siemens AG

    Siemens Aktiengesellschaft is Europe's largest engineering Conglomerate . Siemens' international headquarters are located in Berlin and Munich, Germany....
  • BS2000
    BS2000

    BS2000 is the mainframe operating system platform of Fujitsu Siemens Computers.Mainframe computer are optimized to enable many programs to be installed in Parallelism and run Concurrency on a computer....
     by Siemens AG
    Siemens AG

    Siemens Aktiengesellschaft is Europe's largest engineering Conglomerate . Siemens' international headquarters are located in Berlin and Munich, Germany....
    , now BS2000/OSD from Fujitsu-Siemens Computers (formerly Siemens Nixdorf Informationssysteme
    Siemens Nixdorf Informationssysteme

    Siemens Nixdorf Informationssysteme, Aktiengesellschaft was formed in 1990 by the merger of Nixdorf Computer AG and the Siemens AG' Data Information Services division....
    )
  • BS3000 by Siemens AG
    Siemens AG

    Siemens Aktiengesellschaft is Europe's largest engineering Conglomerate . Siemens' international headquarters are located in Berlin and Munich, Germany....
     (functionally similar to OS-IV and MSP from Fujitsu)
  • Control Program/Monitor (CP/M)
    CP/M

    CP/M is an operating system originally created for Intel 8080/Intel 8085 based microcomputers by Gary Kildall of Digital Research. Initially confined to single tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations, and were migrated to 16-bit processors....
    • CP/M-80 (CP/M for Intel 8080/8085 and Zilog Z80
      Zilog Z80

      The Zilog Z80 is an 8-bit microprocessor designed and sold by Zilog from July 1976 onwards. It was widely used both in desktop and embedded computer designs as well as for military purposes....
       from Digital Research)
    • CP/M-86
      CP/M-86

      CP/M-86 was a version of the CP/M operating system that Digital Research made for the Intel 8086 and Intel 8088. The commands are those of CP/M-80....
       (CP/M for Intel 8088/86 from Digital Research)
    • CP/M-68k (CP/M for Motorola 68000
      Motorola 68000

      The Motorola 68000 is a 16/32-bit Complex instruction set computer microprocessor core designed and marketed by Freescale Semiconductor ....
       from Digital Research)
    • CP/M-8000 (CP/M for Zilog Z8000
      Zilog Z8000

      The Z8000 was a 16-bit microprocessor introduced by ZiLOG in 1979. The architecture was designed by Bernard Peuto while the logic and physical implementation was done by Masatoshi Shima, assisted by a small group of people....
       from Digital Research)
    • MP/M-80 (Multi programming version of CP/M-80 from Digital Research)
    • MP/M-86 (Multi programming version of CP/M-86 from Digital Research)
  • FLEX9 (by TSC
    TSC

    TSC is an acronym for:* Technology Service Corps, a workforce development program for talented youth in the New York city area* Technology Service Corporation, an employee-owned high-technology consulting company...
     for Motorola 6809 based machines; successor to FLEX, which was for Motorola 6800 CPUs)
  • FutureOS
    FutureOS

    FutureOS is an operating system for the Amstrad CPC6128, 6128plus, C-One and T-Rex1 developed by Dr. Stefan W. Stumpferl in Z80 assembler. Its development continues from 1989 up to 2008....
     (for Amstrad/Schneider CPC6128 and CPCPlus machines)
  • GEM
    Graphical Environment Manager

    GEM was a windowing system created by Digital Research for use with the CP/M operating system on the Intel 8088 and Motorola 68000 microprocessors....
     (windowing GUI for CP/M, DOS, and Atari
    Atari

    Atari is a corporate and brand name owned by several entities since its inception in 1972. It is currently owned by Atari Interactive, a wholly owned subsidiary of the French publisher Infogrames ....
     TOS)
  • GEOS
    GEOS (8-bit operating system)

    GEOS was an operating system from Berkeley Softworks . Originally designed for the Commodore 64 and released in 1986, it provided a graphical user interface for this popular 8-bit computer....
     (popular windowing GUI for PC, Commodore, Apple computers)
  • JavaOS
    JavaOS

    JavaOS is an operating system with a Java virtual machine as a fundamental component. It is developed by Sun Microsystems. Unlike Windows, Mac OS, Unix or Unix-like systems which are primarily written in the C programming language, JavaOS is primarily written in Java programming language....
  • JNode
    JNode

    JNode is an open-source project to create a Java platform operating system. The project has taken the unique direction of creating all the software in Java itself, with the exception of some assembly language to booting and load the system....
     JNode.org's OS written 99% in Java (native compiled), provides own JVM and JIT compiler. Based on GNU Classpath
    GNU Classpath

    GNU Classpath is a project aiming to create a free software implementation of the standard Java Class Library for the Java . Despite the massive size of the library to be created, the majority of the task is already done, including Swing , CORBA, and other major parts....
  • JX Java operating system that focuses on a flexible and robust operating system architecture developed as an open source system by the University of Erlangen.
  • KERNAL
    KERNAL

    The KERNAL is Commodore International's name for the read-only memory-resident operating system core in its 8-bit home computers; from the original Commodore PET of 1977, via the extended, but strongly related, versions used in its successors; the Commodore VIC-20, Commodore 64, Plus/4, Commodore 16, and C128....
     (default OS on Commodore 64)
  • MERLIN for the Corvus Concept
  • MorphOS
    MorphOS

    MorphOS is a computer operating system . It is a mixed proprietary software and open source OS produced for the Pegasos PowerPC -processor-based computer, most models of PPC-accelerator-equipped Amiga computers, and a series of Freescale development boards that use the Genesi Firmware, including the EFIKA and mobileGT....
     (Amiga compatible)
  • MSP by Fujitsu
    Fujitsu

    is a Japanese company specializing in semiconductors, air conditioners, computers , telecommunications, and Service , and is headquartered in Minato, Tokyo, Tokyo....
     (successor to OS-IV), now MSP/EX, also known as Extended System Architecture (EXA), for 31-bit mode
  • nSystem by Luis Mateu at DCC, Universidad de Chile
    Universidad de Chile (university)

    The University of Chile is one of the oldest universities in Chile. The university is often called Casa de Bello in honour of its founder and first principal, Andr?s Bello....
  • NetWare (networking OS by Novell
    Novell

    Novell Inc. is a global software corporation based in the United States specializing in enterprise operating systems such as SUSE Linux distributions and Novell NetWare; identity, security and systems management solutions; and collaboration solutions....
    )
  • Oberon operating system
    Oberon operating system

    Oberon is an operating system, originally developed as part of the NS320xx-based Ceres workstation project; it is written entirely in the Oberon programming language....
     (developed at ETH-Zürich by Niklaus Wirth
    Niklaus Wirth

    Niklaus Emil Wirth is a Switzerland computer science, best known for designing several programming languages, including Pascal , and for pioneering several classic topics in software engineering....
     et al) for the Ceres and Chameleon workstation projects. see also Oberon programming language
  • OSD/XC by Fujitsu-Siemens (BS2000 ported to an emulation on a Sun SPARC platform)
  • OS-IV by Fujitsu
    Fujitsu

    is a Japanese company specializing in semiconductors, air conditioners, computers , telecommunications, and Service , and is headquartered in Minato, Tokyo, Tokyo....
     (based on early versions of IBM's MVS
    MVS

    Multiple Virtual Storage, more commonly called MVS, was the most commonly used operating system on the System/370 and System/390 IBM mainframes....
    )
  • Pick
    Pick operating system

    The Pick operating system is a Demand paging, multiuser, virtual memory, time-sharing operating system based around a unique MultiValue. It is used primarily for business data processing....
     (often licensed and renamed)
  • PRIMOS
    PRIMOS

    PRIMOS was an operating system developed during the 1970s by Prime Computer for its minicomputer systems. It rapidly gained popularity and by the mid-1980s was a serious contender as a mainline minicomputer operating system....
     by Prime Computer
    Prime Computer

    Prime Computer was a Natick, Massachusetts-based producer of minicomputers from 1972 until 1992. The alternative spellings "PR1ME" and "PR1ME Computer" were used as brand names or logos by the company....
     (sometimes spelled PR1MOS and PR1ME)
  • Sinclair QDOS
    Sinclair QDOS

    QDOS was the computer multitasking operating system found on the Sinclair QL personal computer and its clones. It was designed by Tony Tebby whilst working at Sinclair Research, as an in-house alternative to another, later cancelled, operating system commissioned from GST Computer Systems....
     (multitasking for the Sinclair QL
    Sinclair QL

    The Sinclair QL , was a personal computer launched by Sinclair Research Ltd in 1984, as the successor to the Sinclair ZX Spectrum. The QL was aimed at the hobbyist and small business markets, but failed to achieve commercial success....
     computer)
  • SkyOS
    SkyOS

    SkyOS is a commercial, Proprietary software, graphical desktop operating system written for the x86 computer architecture. As of January 30, 2009 development has halted....
     (Commercial desktop OS for PCs)
  • SSB-DOS (by TSC
    TSC

    TSC is an acronym for:* Technology Service Corps, a workforce development program for talented youth in the New York city area* Technology Service Corporation, an employee-owned high-technology consulting company...
     for Smoke Signal Broadcasting; a variant of FLEX
    FLEX (operating system)

    The FLEX single-tasking operating system was developed by Technical Systems Consultants of West Lafayette, Indiana, for the Motorola 6800 in 1976....
     in most respects)
  • SymbOS
    SymbOS

    SymbOS is a free multitasking operating system for Zilog Z80-based 8-bit computer systems. At present it is available for the Amstrad CPC series of computers, as well as for all MSX models starting from the MSX2 standard and for most Amstrad PCW models....
     (GUI based multitasking operating system for Z80 computers)
  • Symobi
    Symobi

    Symobi is a modern and mobile real-time operating system. It was and is developed by the German company Miray Software, since 2002 partly in cooperation with the research team of Prof....
     (GUI based modern micro-kernel OS for x86, ARM
    ARM architecture

    The ARM architecture is a 32-bit RISC central processing unit architecture developed by ARM Limited that is widely used in embedded system designs....
     and PowerPC
    PowerPC

    PowerPC is a RISC instruction set architecture created by the 1991 Apple Inc.?IBM?Motorola alliance, known as AIM alliance. Originally intended for personal computers, PowerPC CPUs have since become popular embedded system and high-performance processors....
     processors, used and developed further at Technical University of Munich
    Technical University of Munich

    Technische Universit?t M?nchen is a research university with campuses in Munich, Garching, and Weihenstephan.TUM is among the highest acclaimed universities in Germany, producing several Nobel Laureates including Gerhard Ertl who in 2007 received the Nobel Prize in Chemistry....
    )
  • TripOS
    TRIPOS

    TRIPOS is a computer operating system. Development started in 1976 at the Computer Laboratory of University of Cambridge and it was headed by Dr....
    , 1978
    • TurboDOS (Software 2000, Inc.)
  • UCSD p-System (portable complete programming environment/operating system/virtual machine developed by a long running student project at the Univ Calif/San Diego; directed by Prof Ken Bowles; written in Pascal)
  • UMIX, made for the ICFP Programming Contest
    ICFP Programming Contest

    The ICFP Programming Contest is an international programming competition held annually around June or July since 1998, with results announced at the International Conference on Functional Programming....
     2006.
  • VOS
    Stratus VOS

    VOS is a proprietary operating system running on Stratus Technologies computer systems. Currently VOS is only available on Stratus's ftServer and Continuum platforms, and is typically used in critical transaction processing scenarios where the built-in fault-tolerance delivers extremely high-availability....
     by Stratus Technologies
    Stratus Technologies

    Stratus Technologies is a Maynard, Massachusetts, based producer of fault tolerant computers. the company was founded in 1980 as Stratus Computer and adopted its present name in 1999....
     with strong influence from Multics
    Multics

    Multics was an extremely influential early time-sharing operating system. The project was started in 1964. The last known running Multics installation was shut down on October 30, 2000....
  • VOS
    VOS

    VOS is a three-letter abbreviation with multiple meanings, as described below:* In linguistic typology, VOS denotes Verb Object Subject* In meteorology, VOS is short for voluntary observing ship program...
     by Hitachi
    Hitachi, Ltd.

    is a multinational corporation specializing in high-technology and services headquartered in Marunouchi Itchome, Chiyoda, Tokyo, Tokyo, Japan. The company is the parent of the Hitachi Group as part of the larger DKB Group companies....
     for its IBM-compatible mainframes, based on IBM's MVS
    MVS

    Multiple Virtual Storage, more commonly called MVS, was the most commonly used operating system on the System/370 and System/390 IBM mainframes....
  • VM2000
    VM2000

    VM 2000 is a hypervisor from Fujitsu Siemens Computers designed specifically for use with the BS2000 and SINIX operating systems. It is an EBCDIC-based operating system....
     by Siemens AG
    Siemens AG

    Siemens Aktiengesellschaft is Europe's largest engineering Conglomerate . Siemens' international headquarters are located in Berlin and Munich, Germany....
  • VisiOn
    Vision

    Vision or Visions may refer to:* visual perception, eyesight* vision , inspirational experiences* hallucination, vivid conscious perception in the absence of a stimulus....
     (first GUI for early PC machines; not commercially successful)
  • VPS/VM
    VPS/VM

    VPS/VM was an operating system that ran on IBM System/370 - System/3090 computers at Boston University in general use from 1977 to around 1990, and in limited use until at least 1993....
     (IBM based, main operating system at Boston University
    Boston University

    Boston University is a private nonsectarian university located in Boston, Massachusetts, Massachusetts, United States. Although chartered by the Massachusetts Legislature in 1869, Boston University traces its roots to the establishment of the Newbury Biblical Institute in Newbury, Vermont in 1839....
     for over 10 years.)
  • aceos
    AceOS

    Object oriented operating system created in years 1997-2001 by PTL System. AceOS was first created as project by a team of people related with Technical University of Gdansk, then commercialized under PTL System....
     under GPL
  • Miraculix
    Miraculix

    Miraculix is 32-bit operating system originated from Russia....
     Russian OS, under unknown license.


For Elektronika BK
Elektronika BK

Elektronika BK was a series of 16-bit PDP-11-compatible Soviet Union home computers developed by NPO Scientific Center, at that time the leading Soviet microcomputer design team, responsible also for more powerful UKNC and DVK micros....

  • ANDOS
    ANDOS

    ANDOS is a Russian operating system for Electronika BK-0010, Electronika BK-0011 and Electronika BK-0011M series computers. It was created in 1990 and saw first release in 1992....
  • AO-DOS
  • BASIS
  • CSI-DOS
    CSI-DOS

    CSI-DOS is an operating system, created in Samara, Russia, for Soviet Union personal computers Elektronika BK and Elektronika BK-0011. CSI-DOS did not support the earlier model BK-0010....
  • DOSB10
  • DX-DOS
  • FA-DOS
  • HC-DOS
  • KMON (operating system)|KMON
  • MicroDOS
  • MK-DOS
    MK-DOS

    MK-DOS - one of the most widespread operating systems for Elektronika BK Soviet Union personal computer, developed by Mikhail Korolev and Dmitriy Butyrskiy starting from 1993....
  • NORD
  • NORTON-BK
  • RAMON
  • PascalDOS
  • RT-11
    RT-11

    RT-11 was a small, single-user real-time operating system for the Digital Equipment Corporation PDP-11 family of 16-bit computers. RT-11 was first implemented in 1970 and was widely used for real-time computing systems, process control, and data acquisition across the full line of PDP-11 computers....
    • ROM embedded
    • RT-11SJ
    • OS BK-11 (RT-11 version)
  • Turbo-DOS
  • BKUNIX
    BKUNIX

    BKUNIX is an operating system for the Soviet Union Elektronika BK personal computer. It is based on LSX kernel and licensed under the GNU General Public License....
  • OS/A WASP


Hobby

  • AROS
    Aros

    Aros may refer to:Aros-Eros-Cupid-AmorIt is believed that the origins above led Saint Valentines enthusiasts to appoint the Roman god Cupid as the patron of Valentine's day -- that is the story of Lupercalia and the love and romance associatied with the St....
     (AROS Research Operating System, formerly known as Amiga Research Operating System)
  • AtheOS
    AtheOS

    AtheOS was a free software operating system for x86-based computers. It was initially intended as an AmigaOS clone, but that objective was later abandoned....
     (branched to become Syllable Desktop)
  • DexOS
    DexOS

    DexOS, is a Free and open source software 32-bit games console type operating system for IA-32. It was written entirely in assembly language using FASM....
     (Video game console
    Video game console

    A video game console is an game development that produces a video signal which can be used with a display device to display a video game. The term "video game console" is used to distinguish a machine designed for consumers to buy and use solely for playing video games from a personal computer, which has many other functions, or arcade machi...
    -like operating system
    Operating system

    An operating system is an interface between hardware and applications; it is responsible for the management and coordination of activities and the sharing of the limited resources of the computer....
     for 32-bit x86 computers
    IA-32

    IA-32 , often generically called x86 or x86-32, is the instruction set architecture of Intel's most commercially successful microprocessors....
    )
  • EROS (Extremely Reliable Operating System)
  • FAMOS Foremost Advanced Memory Operating System (webpage: www.fa-mos.com )
  • HelenOS
    HelenOS

    HelenOS is an operating system based on a Preemption microkernel design. The source code of HelenOS is published under free software licences, making the operating system free software....
  • KolibriOS
    KolibriOS

    KolibriOS is a free software operating system with a Monolithic kernel Preemption , Real-time operating system Kernel , video drivers, for 32-bit x86 architecture computers, developed and maintained by The KolibriOS Project Team....
     (fork of MenuetOS
    MenuetOS

    MenuetOS is an operating system with a Monolithic kernel Preemption , Real-time operating system Kernel , including video drivers, all written in FASM assembly language, for 64-bit and 32-bit x86 architecture computers, by Ville Turjanmaa....
    )
  • LoseThos
    LoseThos

    LoseThos is a public-domain, x86-64 opcode, operating system, developed by Terry A. Davis. The stated goal of this project is "programming as entertainment." It is oriented toward video games, not the Internet, desktop publishing or multimedia....
  • LSE/OS
    LSE/OS

    The LSE/OS kernel was a research kernel designed by a French research laboratory named Epita System Laboratory. The project is now open source....
  • MenuetOS
    MenuetOS

    MenuetOS is an operating system with a Monolithic kernel Preemption , Real-time operating system Kernel , including video drivers, all written in FASM assembly language, for 64-bit and 32-bit x86 architecture computers, by Ville Turjanmaa....
     (extremely compact OS with GUI
    Gui

    Gui or guee is a generic term to refer to grillinged dishes in Korean cuisine. These most commonly have meat or fish as their primary ingredient, but may in some cases also comprise grilled vegetables or other vegetarian ingredients....
    , written entirely in FASM
    FASM

    FASM is a free and open source x86 assembly language Assembly language#Assembler supporting the IA-32 and x86-64 architectures. It is known for its high speed, size optimizations, OS portability, and Macro capabilities....
     assembly language)
  • Möbius operating system, Möbius is an open-source operating system for the IA-32 platform (Intel i386 and compatibles)
  • NewOS
  • Syllable Desktop (a modern, independently originated OS; see AtheOS
    AtheOS

    AtheOS was a free software operating system for x86-based computers. It was initially intended as an AmigaOS clone, but that objective was later abandoned....
    )
  • Visopsys
  • TajOS


Embedded

  • A/ROSE
    A/ROSE

    A/ROSE was a small embedded operating system which ran on Apple Computer's Macintosh Coprocessor Platform, an expansion card for the Apple Macintosh....
  • Embedded Linux
    Embedded Linux

    Embedded Linux is the use of a Linux kernel operating system in embedded computer systems such as mobile phones, personal digital assistants, media centers, set-top boxes, and other consumer electronics devices, computer network equipment, machine control, industrial automation, navigation equipment and medical instruments....
  • FreeBSD
    FreeBSD

    FreeBSD is a Unix-like free software operating system descended from AT&T Unix via the Berkeley Software Distribution branch through the 386BSD and Berkeley Software Distribution#4.4BSD and descendants operating systems....
  • FreeRTOS
    FreeRTOS

    FreeRTOS is a real-time operating system for embedded devices, being ported to several microcontrollers. It is distributed under the GNU General Public License with an optional exception....
  • Inferno
    Inferno (operating system)

    Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
     (distributed OS, Bell Labs
    Bell Labs

    Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
    )
  • LynxOS
    LynxOS

    The LynxOS RTOS is a Unix-like real-time operating system from LynuxWorks . Sometimes known as the Lynx Operating System, LynxOS features full POSIX conformance and, more recently, Linux compatibility....
  • pSOS
    PSOS

    According to some industry insiders, pSOS stands for plug-in Silicon Operating System but the official stance is that it is not an abbreviation, just a made-up word....
  • Nucleus
    Nucleus

    Nucleus may refer to:...
  • CMX
    CMX

    CMX may refer to:* CMX , a Finnish rock band* CMX , a manga brand by DC Comics* CMX Systems, a collaboration between CBS and Memorex which developed video editing systems in the 1970s....
  • uC/OS
  • eCos
    ECos

    eCos is an open source, royalty-free, real-time operating system intended for embedded systems and applications which need only one Process with Thread ....
  • RTEMS
    RTEMS

    RTEMS is a free open source real-time operating system designed for embedded systems.The acronym RTEMS initially stood for Real-Time Executive for Missile Systems, then became Real-Time Executive for Military Systems before changing to its current meaning....
  • MINIX 3
    MINIX 3

    MINIX 3 is a project to create a small, highly reliable and functional Unix-like operating system. The main goal of the project is for the system to be fault-tolerant by detecting and repairing its own faults on the fly, without user intervention....
  • .NET Micro Framework
    .NET Micro Framework

    The .NET Micro Framework is a Microsoft .NET platform for extremely resource-constrained devices. It includes a small version of the .NET common language runtime and supports development in C Sharp and debugging , both using Microsoft Visual Studio....
  • OS/RT
  • Open AT OS
    Open AT OS

    Open AT OS is an operating system provided by Wavecom together with its CPUs.It basically provides what some other operating systems do, with the particularity to natively provide GSM related functions such as GSM voice calls or data transfer related APIs....
  • polyBSD (embedded NetBSD)
  • QNX
    QNX

    QNX is a commercial Unix-like real-time operating system, aimed primarily at the embedded systems market. On September 12, 2007, the source of the QNX kernel was released for non-commercial use....
  • RTXC Quadros RTOS by Quadros Systems
  • ROM-DOS
  • T2 SDE
    T2 SDE

    T2 is a flexible Open Source System Development Environment that facilitates the automated creation of Linux-based systems. T2 enables the creation of custom Linux distribution for targets including embedded systems with low memory footprint, secure and specialized server setups, or complete desktop systems, with an adaptable modular framew...
  • VxWorks
    VxWorks

    VxWorks is a real-time operating system operating system made and sold by Wind River Systems of Alameda, California, California, USA.VxWorks is designed for use in embedded systems....
  • RTLinux
    RTLinux

    RTLinux is an extension of Linux to a real-time operating system, which was originally developed by Victor Yodaiken at the New Mexico Institute of Mining and Technology....
  • Windows XP Embedded
  • Windows CE
    Windows CE

    Windows CE is Microsoft's operating system for minimalistic computers and embedded systems. Windows CE is a distinctly different operating system and Kernel , rather than a trimmed-down version of desktop Windows....


Personal digital assistants (PDAs)

  • Inferno
    Inferno (operating system)

    Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
     (distributed OS originally from Bell Labs
    Bell Labs

    Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
    )
  • Palm OS
    Palm OS

    Palm OS is an embedded operating system operating system initially developed by U.S. Robotics Corp.-owned Palm, Inc. for personal digital assistants in 1996....
     from Palm, Inc; now spun off as PalmSource
  • Palm webOS
    Palm webOS

    palm webOS is an embedded operating system developed by Palm, Inc. for smartphones, and was introduced to the public at the Consumer Electronics Show in Las Vegas Strip on ....
     from Palm, Inc.
  • EPOC originally from Psion (UK), now from Symbian, preferred name now is Symbian OS
    Symbian OS

    Symbian OS is a proprietary software operating system designed for mobile devices, with associated Library , user interface, frameworks and reference implementations of common tools, developed by Symbian Ltd....
  • Windows CE
    Windows CE

    Windows CE is Microsoft's operating system for minimalistic computers and embedded systems. Windows CE is a distinctly different operating system and Kernel , rather than a trimmed-down version of desktop Windows....
    , from Microsoft
    • Pocket PC
      Pocket PC

      A Pocket PC, abbreviated P/PC or PPC, is a hardware specification for a handheld-sized computer that runs the Microsoft Windows Mobile operating system....
       from Microsoft, a variant of Windows CE.
    • Windows Mobile
      Windows Mobile

      Windows Mobile is a compact operating system combined with a suite of basic applications for mobile devices based on the Microsoft Windows API application programming interface....
       from Microsoft, a variant of Windows CE.
  • Linux
    Linux

    Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
     on Sharp Zaurus
    Sharp Zaurus

    The Sharp Zaurus is the name of a series of Personal digital assistant made by Sharp Corporation. The Zaurus was the most popular PDA during the 1990s in Japan and was based on a proprietary operating system....
     and Ipaq
    IPAQ

    iPAQ presently refers to a Pocket PC and personal digital assistant first unveiled by Compaq in April 2000; the name was borrowed from Compaq's earlier iPAQ s....
  • DOS
    DOS

    DOS, short for "Disk Operating System", is a shorthand term for several closely related operating systems that dominated the IBM PC compatible market between 1981 and 1995, or until about 2000 if one includes the partially DOS-based Microsoft Windows versions Windows 95, Windows 98, and Windows Me....
     on Poqet PC
    Poqet PC

    The Poqet PC is a very small, portable computer IBM PC compatible computer, introduced in 1989 by Poqet Computer Corporation with a price of $2000....
  • Newton OS
    Newton OS

    Newton OS was the operating system for the Apple Newton PDAs produced by Apple from 1993 - 1997. Newton OS was written entirely in C++ and trimmed to be low power consuming and use the available memory efficiently....
     on Apple Newton
    Apple Newton

    The MessagePad was the first series of personal digital assistant devices developed by Apple Inc. for the Newton . Some electronic engineering and the manufacture of Apple's MessagePad devices was done in Japan by the Sharp Corporation....
     Messagepad
  • VT-OS for the Vtech Helio
  • Internet Tablet OS based on Debian
    Debian

    Debian GNU/Linux is one of the most popular and influential computer operating systems composed of free software and open source software....
     Linux
    Linux

    Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed by anyone under the terms of the GNU GPL license...
     and deployed on Nokia's
    Nokia

    Nokia Corporation is a Finland Multinational corporation communications corporation, headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki....
     Nokia 770, N800
    Nokia N800

    The Nokia N800 Internet Tablet is a wireless Internet appliance from Nokia, originally announced at the Las Vegas, Nevada Consumer Electronics Show Summit in January 2007....
     and N810
    Nokia N810

    The Nokia N810 Internet Tablet is an Internet appliance from Nokia, announced on 17 October, 2007 at the Web 2.0 Summit in San Francisco. Despite Nokia's strong association with cellular products, the N810 is not a phone, but instead allows the user to browse the Internet and communicate using Wi-Fi networks or with a mobile phone via Bluetoo...
     Internet Tablets.
  • Magic Cap
    Magic Cap

    Magic Cap was an Object-oriented programming operating system for Personal digital assistants developed by General Magic. Tony Fadell was in charge of the platform....


Music players

  • ipodlinux
    IPodLinux

    iPodLinux is a ?Clinux-based Linux distribution targeted specifically to run on Apple Inc.'s iPod. When the iPodLinux kernel is booted it takes the place of Apple's iPod operating system and automatically loads Podzilla, an alternative Graphical user interface and launcher for a number of additional included computer program such as a video p...
  • Pixo
    Pixo

    Pixo was a company that developed infrastructure for wireless systems. Paul Mercer left Apple Inc. in 1994 to found Pixo. The company developed a system software toolkit in C++ which was later adopted by Apple for use in the iPod....
  • RockBox
    Rockbox

    Rockbox is a free software replacement for the firmware held on various forms of digital audio players . Rockbox offers an alternative to the host device's operating system firmware which provides a plug-in architecture for adding various enhancements and functionality to DAPs which are not present in the original OS....
  • iPhone OS
    IPhone OS

    The iPhone OS or OS X iPhone is the operating system developed by Apple Inc. for the iPhone and iPod Touch. Like Mac OS X, from which it was derived, it uses the Darwin foundation....
  • iriver clix UI


Smartphones


BlackBerry OS
BlackBerry OS

BlackBerry OS is the proprietary software platform made by Research In Motion for their BlackBerry line of handhelds. It provides multi-tasking, and makes heavy use of the device's specialized input devices, particularly the thumbwheel....
 Embedded Linux
Embedded Linux

Embedded Linux is the use of a Linux kernel operating system in embedded computer systems such as mobile phones, personal digital assistants, media centers, set-top boxes, and other consumer electronics devices, computer network equipment, machine control, industrial automation, navigation equipment and medical instruments....
 *Android
Android (mobile device platform)

Android is a platform and operating system for mobile devices, based on the Linux kernel, developed by Google and later the Open Handset Alliance....
 *Openmoko Linux
Openmoko Linux

Openmoko Linux is an operating system for smartphones developed by First International Computer. It is based on the ?ngstr?m distribution, comprising various pieces of free software....
 *Mobilinux
Mobilinux

Mobilinux is a Linux-based operating system targeting smartphones. It was announced by MontaVista on April 25, 2005.Mobilinux is based on open source and open standard technology, designed for scalability and maximized battery power usage for single-chip mobile phones....
 *MontaVista
MontaVista

MontaVista Software is a software developer that develops embedded Linux system software, development tools, and related software. Its products are targeted at other corporations developing embedded systems such as automotive electronics, communications equipment, mobile phones, and other electronics devices and infrastructure....
 *MotoMagx *Qtopia
Qtopia

Qt Extended, formerly known as Qtopia until September 30, 2008, is an application platform for Embedded Linux-based mobile computing devices such as personal digital assistants and mobile phones....
 *LiMo Platform
LiMo Platform

The LiMo Platform is an operating system and platform for mobile phones and other Mobile device.LiMo is developed by the LiMo Foundation for handheld devices, and is based on the Linux operating system....
 iPhone OS
IPhone OS

The iPhone OS or OS X iPhone is the operating system developed by Apple Inc. for the iPhone and iPod Touch. Like Mac OS X, from which it was derived, it uses the Darwin foundation....
 JavaFX Mobile
JavaFX Mobile

JavaFX Mobile is the JavaFX application platform for mobile devices and a part of JavaFX platform.JavaFX Mobile applications can be developed in the same language, JavaFX Script, as JavaFX applications for browser or desktop, and using the same tools: JavaFX SDK and the JavaFX Production Suite....
 Palm OS
Palm OS

Palm OS is an embedded operating system operating system initially developed by U.S. Robotics Corp.-owned Palm, Inc. for personal digital assistants in 1996....
 Symbian OS
Symbian OS

Symbian OS is a proprietary software operating system designed for mobile devices, with associated Library , user interface, frameworks and reference implementations of common tools, developed by Symbian Ltd....
 Windows CE
Windows CE

Windows CE is Microsoft's operating system for minimalistic computers and embedded systems. Windows CE is a distinctly different operating system and Kernel , rather than a trimmed-down version of desktop Windows....
 *Windows Mobile
Windows Mobile

Windows Mobile is a compact operating system combined with a suite of basic applications for mobile devices based on the Microsoft Windows API application programming interface....


Routers

by Allied Telesis
Allied Telesis

Allied Telesis is a telecommunications company, formerly Allied Telesyn. Headquartered in Japan, their North American headquarters are in Bothell, Washington, a suburb of Seattle....
 (aka Allied Telesyn) by Allied Telesis
Allied Telesis

Allied Telesis is a telecommunications company, formerly Allied Telesyn. Headquartered in Japan, their North American headquarters are in Bothell, Washington, a suburb of Seattle....
 (aka Allied Telesyn) AirOS by Ubiquiti networks CatOS
CatOS

CatOS is Cisco Systems' obsoleted Unix-like operating system for many of their Catalyst switch-brand of legacy network switches. Originally called "XDI" by the switching company Crescendo Communications, Inc., Cisco renamed it to CatOS when they acquired Crescendo in late 1993....
 by Cisco Systems
Cisco Systems

Cisco Systems, Inc. is a multinational corporation with more than 66,000 employees and annual revenue of United States dollar39 billion as of 2008....
 Cisco IOS
Cisco IOS

Cisco IOS is the software used on the vast majority of Cisco Systems routers and all current Cisco network switches. . IOS is a package of routing, switching, internetworking and telecommunications functions tightly integrated with a computer multitasking operating system....
 (originally Internetwork Operating System) by Cisco Systems
Cisco Systems

Cisco Systems, Inc. is a multinational corporation with more than 66,000 employees and annual revenue of United States dollar39 billion as of 2008....
 CyROS by Cyclades
Cyclades

The Cyclades are a Greece island group in the Aegean Sea, south-east of the mainland of Greece; and an administrative prefectures of Greece of Greece....
 DD-WRT
DD-WRT

DD-WRT is Free software Linux-based firmware for several wireless routers, most notably the Linksys WRT54G . It is licensed under the GNU General Public License version 2....
 by NewMedia-NET Inferno
Inferno (operating system)

Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
 (distributed OS originally from Bell Labs
Bell Labs

Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
) IOS-XR by Cisco Systems
Cisco Systems

Cisco Systems, Inc. is a multinational corporation with more than 66,000 employees and annual revenue of United States dollar39 billion as of 2008....
 IronWare by Foundry Networks
Foundry Networks

Foundry Networks, Inc. was a networking hardware vendor selling high-end Ethernet Network switch and routers. The company was founded in 1996 by Bobby R....
 JunOS
Junos

Junos may refer to:* Juno Award* JUNOS ...
 by Juniper Networks
Juniper Networks

Juniper Networks, Inc. is an information technology and computer networking products multinational company, founded in 1996....
 RouterOS by Mikrotik
Mikrotik

Mikrotikls Ltd., known internationally as MikroTik, is a Latvian manufacturer of computer Computer networking equipment. It sells wireless products and routers....
 ROX
Rox

Rox may refer to the following:* ROX Desktop, a Unix Desktop environment based around the ROX-Filer file manager* ROX-Filer, a minimalist graphical file manager for the X Window System...
 by Ruggedcom ScreenOS by Juniper Networks
Juniper Networks

Juniper Networks, Inc. is an information technology and computer networking products multinational company, founded in 1996....
 originally from Netscreen

Microcontrollers, Real-time

BeRTOS
BeRTOS

BeRTOS is a real-time operating system designed for embedded systems.It is distributed under a modified GNU General Public License license with a special exception that grants application proprietary code the right to remain closed source while maintaining as open source BeRTOS code itself....
 ChibiOS/RT
ChibiOS/RT

ChibiOS/RT is a compact and fast real-time operating system supporting multiple architectures and released under the GPL3 license....
 GPL licensed RTOS ChorusOS
ChorusOS

ChorusOS is a microkernel real-time operating system designed for embedded systems. Sun Microsystems acquired Chorus Syst?mes, the company which created ChorusOS, in 1997....
 Contiki
Contiki

Contiki is a small, open source, highly porting, Computer multitasking computer operating system developed for use on a number of memory-constrained networked systems ranging from 8-bit computers to embedded systems on microcontrollers, including Wireless sensor network motes....
 written in C
C (programming language)

C is a general-purpose computer programming language originally developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories to implement the Unix operating system....
 DSPnano RTOS (POSIX nanokernel, DSP Optimizations, Open Source)
DSPnano RTOS

DSPnano is an embedded real-time operating system which is 100% compatible with POSIX and offers a tiny tiny embedded Linux compatible solution. It was first created in 1996 and was one of the first pthread based real-time kernels....
 eCos
ECos

eCos is an open source, royalty-free, real-time operating system intended for embedded systems and applications which need only one Process with Thread ....
 embOS (Segger)
Segger Microcontroller Systems

Segger Microcontroller Systems is a multinational company dealing in middleware for embedded devices and development tools. The company, founded in 1991, is headquartered in Hilden, Germany with a United States office in Westminster, Massachusetts....
 FreeRTOS
FreeRTOS

FreeRTOS is a real-time operating system for embedded devices, being ported to several microcontrollers. It is distributed under the GNU General Public License with an optional exception....
 Fusion RTOS INtime RTOS for Windows, an evolutionary variant of iRMX for Windows
RMX

iRMX is a real-time operating system designed specifically for use with the Intel 8080 and Intel 8086 family of processors. It is an acronym for Real-time Multitasking eXecutive....
 designed for 32-bit Windows platforms iRMX
RMX

iRMX is a real-time operating system designed specifically for use with the Intel 8080 and Intel 8086 family of processors. It is an acronym for Real-time Multitasking eXecutive....
 (originally developed by Intel) Inferno
Inferno (operating system)

Inferno is an operating system for creating and supporting distributed services.It was based on the experience of Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability....
 (distributed OS originally from Bell Labs
Bell Labs

Bell Laboratories is the research organization of Alcatel-Lucent and previously of the American Telephone & Telegraph Company .Bell Laboratories has had its headquarters at Berkeley Heights, New Jersey, and it has research and development facilities throughout the world....
) INTEGRITY
Integrity (operating system)

INTEGRITY is a real-time operating system produced and marketed by Green Hills Software. It is royalty-free, POSIX-certified, and intended for use in embedded systems needing reliability, availability, and fault tolerance....
 LUnix
LUnix

LUnix is a Unix-like operating system for the Commodore 64, a popular home computer of the 1980s. It supports TCP/IP networking . Unlike most Unix-like systems, LUnix is written in 6502 assembly language instead of C ....
 written in 6502
MOS Technology 6502

The MOS Technology 6502 is an 8-bit microprocessor that was designed by Chuck Peddle and Bill Mensch for MOS Technology in 1975. When it was introduced, it was the least expensive full-featured central processing unit on the market by a considerable margin, costing less than one-sixth the price of competing designs from larger companies such...
 LynxOS
LynxOS

The LynxOS RTOS is a Unix-like real-time operating system from LynuxWorks . Sometimes known as the Lynx Operating System, LynxOS features full POSIX conformance and, more recently, Linux compatibility....
 MenuetOS
MenuetOS

MenuetOS is an operating system with a Monolithic kernel Preemption , Real-time operating system Kernel , including video drivers, all written in FASM assembly language, for 64-bit and 32-bit x86 architecture computers, by Ville Turjanmaa....
 MontaVista Linux
MontaVista

MontaVista Software is a software developer that develops embedded Linux system software, development tools, and related software. Its products are targeted at other corporations developing embedded systems such as automotive electronics, communications equipment, mobile phones, and other electronics devices and infrastructure....
 (see also Embedded Linux
Embedded Linux

Embedded Linux is the use of a Linux kernel operating system in embedded computer systems such as mobile phones, personal digital assistants, media centers, set-top boxes, and other consumer electronics devices, computer network equipment, machine control, industrial automation, navigation equipment and medical instruments....
) Nucleus
Nucleus RTOS

Nucleus OS is a real-time operating system and full-featured toolset created by the Embedded system Division of Mentor Graphics for various CPU platforms....
 OS-9
OS-9

OS-9 is a family of real-time computing, process , computer multitasking, multi-user, Unix-like operating systems, developed in the 1980s, originally by Microware for the Motorola 6809 microprocessor....
 by Microware Operating System Embedded
Operating System Embedded

The Operating System Embedded is a real-time operating system embedded operating system created by the Sweden information technology company ENEA AB....
: OSE OSEK
OSEK

OSEK is a standards body that has produced specifications for an embedded operating system, a communications stack, and a network management protocol for automotive embedded systems....
 OS/RT Phoenix-RTOS
Phoenix-RTOS

The Phoenix-RTOS is an open source Unix-like real-time operating system based on a microkernel, aimed at the embedded systems market....
 Prex
Prex

Prex is a Porting 32-bit embedded operating system real-time operating system microkernel operating system. The Kernel is compact, under 25k bytes, and provides memory management, inter-process communication and Thread in the kernel, and leaves more Application layer-specific features like a file system to be implemented....
 QNX
QNX

QNX is a commercial Unix-like real-time operating system, aimed primarily at the embedded systems market. On September 12, 2007, the source of the QNX kernel was released for non-commercial use....
 RTAI
RTAI

RTAI stands for real-time computing Application Interface. It is a real-time extension for the Linux kernel - which lets you write applications with strict timing constraints for Linux....
 RTEMS
RTEMS

RTEMS is a free open source real-time operating system designed for embedded systems.The acronym RTEMS initially stood for Real-Time Executive for Missile Systems, then became Real-Time Executive for Military Systems before changing to its current meaning....
 (Real-Time Executive for Multiprocessor Systems) RTLinux
RTLinux

RTLinux is an extension of Linux to a real-time operating system, which was originally developed by Victor Yodaiken at the New Mexico Institute of Mining and Technology....
 by Wind River Systems
Wind River Systems

Wind River Systems, Inc. is a publicly owned company providing embedded systems, development tools for embedded systems, middleware, and other types of software....
 RTXC Quadros RTOS by Quadros Systems SCIOPTA RTOS ThreadX
ThreadX

ThreadX, developed and marketed by Express Logic, Inc. of San Diego, California, USA, is a real-time operating system . Similar RTOSes are available from other vendors such as VxWorks, Nucleus RTOS, Operating System Embedded, QNX, LynxOS, etc....
 TRON Project
TRON Project

TRON is an open real-time operating system kernel design, and is an acronym for "The Real-time Operating system Nucleus". The project was started by Ken Sakamura of the University of Tokyo in 1984....
 and ITRON Project
ITRON Project

The ITRON project is the first of several sub-architectures of the TRON Project.Originally undertaken in 1984, ITRON is a Japanese open standard for a real-time operating system initiated under guidance of Ken Sakamura....
 (related to BTRON
BTRON

Business TRON , is a computer operating system with a graphical user interface built upon Central TRON , itself a subproject of The Real-time Operating system Nucleus ....
, CTRON, MTRON
Mtron

Mtron may refer to:*...
, etc.) µClinux µOS++ (micro OS plus plus) Unison Operating System
Unison Operating System

The Unison Operating System is a SoC, multi-core and digital signal processor optimized open source real-time operating system which offers a tiny tiny Linux compatible solution....
 / Unison DSP Operating System (RTOS) / Unison RTOS (Multicore DSP Operating System) VRTX / Versatile Real-Time Executive
Versatile Real-Time Executive

Versatile Real-Time Executive is a real-time operating system nowadays developed and marketed by the company Mentor Graphics. VRTX is suitable for both traditional board-based embedded systems and System-on-a-chip architectures....
 VxWorks
VxWorks

VxWorks is a real-time operating system operating system made and sold by Wind River Systems of Alameda, California, California, USA.VxWorks is designed for use in embedded systems....
 by Wind River Systems
Wind River Systems

Wind River Systems, Inc. is a publicly owned company providing embedded systems, development tools for embedded systems, middleware, and other types of software....
 XMK
XMK (operating system)

The eXtreme Minimal Kernel is a real-time operating system that is designed for minimal RAM/read-only memory use. It achieves this goal, though it is almost entirely written in the C ....
 (eXtreme Minimal Kernel) Xenomai
Xenomai

Xenomai is a real-time framework cooperating with the Linux kernel, in order to provide a wikt:pervasive, interface-agnostic, hard real-time computing support to user space Application software, seamlessly integrated into the Linux environment....


Capability-based

KeyKOS
KeyKOS

KeyKOS is a Persistence , pure Capability-based security operating system for the IBM IBM System/370 IBM mainframe computers. It allowed Emulator the VM , MVS, and POSIX environments....
 nanokernel *EROS
Extremely Reliable Operating System

EROS is an operating system developed by The EROS Group, LLC., the Johns Hopkins University, and the University of Pennsylvania. Interesting features include automatic data and process orthogonal persistence, some preliminary real-time operating system support, and capability-based security....
 microkernel **CapROS
CapROS

CapROS is an open source operating system. It is a pure Capability-based security system that features automatic persistence of data and processes, even across system reboots....
 EROS successor **Coyotos
Coyotos

Coyotos is a Capability-based security security-focused microkernel operating system being Software engineering by The EROS Group, LLC. It is a successor to the Extremely Reliable Operating System system that was created at the University of Pennsylvania and Johns Hopkins University....
 EROS successor, goal: be first formally verified OS MONADS designed to support the MONADS hardware projects. *SPEEDOS builds on MONADS ideas V
V (operating system)

The V operating system is a Kernel operating system that was developed by faculty and students in the Distributed Systems Group at Stanford University in the 1980s, led primarily by Prof....
 from Stanford, early 1980s

LEGO Mindstorms

BrickOS operating system
BrickOS operating system

brickOS is an alternative operating system for the Lego Mindstorms Lego Mindstorms#The RCX programmable brick. It also provides a C /C++ development environment for RCX programs using GNU Compiler Collection and g++ and the necessary tools to download programs to the RCX....
 leJOS operating system ChyanOS operating system

See also

Comparison of operating systems
Comparison of operating systems

These tables compare general and technical information for a number of widely used and currently available operating systems.Due to the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed comparison....
 Timeline of operating systems List of Real-time operating systems
List of real-time operating systems

This list of real-time operating systems enumerates real-time operating systems. An RTOS is an operating system in which the maximum time from an input stimulus to an output response can be definitely determined....


Category links

Operating systems Real-time operating systems Embedded operating systems

External links