Ups is an open source

Open source

The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...

 source

Source code

In computer science, source code is text written using the format and syntax of the programming language that it is being written in. Such a language is specially designed to facilitate the work of computer programmers, who specify the actions to be performed by a computer mostly by writing source...

-level debugger

Debugger

A debugger or debugging tool is a computer program that is used to test and debug other programs . The code to be examined might alternatively be running on an instruction set simulator , a technique that allows great power in its ability to halt when specific conditions are encountered but which...

 developed in the late 1980s for Unix

Unix

Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...

 and 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....

 systems, originally developed at the University of Kent

University of Kent

The University of Kent, previously the University of Kent at Canterbury, is a public research university based in Kent, United Kingdom...

 by Mark Russell. It supports C

C (programming language)

C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

 and C++

C++

C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. It is regarded as an intermediate-level language, as it comprises a combination of both high-level and low-level language features. It was developed by Bjarne Stroustrup starting in 1979 at Bell...

, and Fortran

Fortran

Fortran is a general-purpose, procedural, imperative programming language that is especially suited to numeric computation and scientific computing...

 on some platforms.

Unlike more popular debugger stacks for modern Unix platforms, ups is completely self-contained — not merely a graphical front-end to lower-level debuggers like gdb

GNU Debugger

The GNU Debugger, usually called just GDB and named gdb as an executable file, is the standard debugger for the GNU software system. It is a portable debugger that runs on many Unix-like systems and works for many programming languages, including Ada, C, C++, Objective-C, Free Pascal, Fortran, Java...

 (although some work has been done to make ups usable in that way). The ups user interface is built directly upon the X Window System

X Window System

The X window system is a computer software system and network protocol that provides a basis for graphical user interfaces and rich input device capability for networked computers...

 and SunView

SunView

SunView was a windowing system from Sun Microsystems developed in the early 1980s. It was included as part of SunOS, Sun's UNIX implementation; unlike later UNIX windowing systems, much of it was implemented in the system kernel...

, i.e. it does not use an intermediate widget toolkit

Widget toolkit

In computing, a widget toolkit, widget library, or GUI toolkit is a set of widgets for use in designing applications with graphical user interfaces...

 such as Motif

Motif (widget toolkit)

In computing, Motif refers to both a graphical user interface specification and the widget toolkit for building applications that follow that specification under the X Window System on Unix and other POSIX-compliant systems. It emerged in the 1980s as Unix workstations were on the rise, as a...

 or GTK+

GTK+

GTK+ is a cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the GNU LGPL, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the X Window System, along with Qt.The name GTK+ originates from GTK;...

.

See also

• DDD
  Data Display Debugger
  Data Display Debugger, or DDD, is a popular free software graphical user interface for command-line debuggers such as GDB, DBX, JDB, , XDB, the Perl debugger, the Bash , the Python , and the GNU Make...
  
  , a Motif debugger front-end
• KDbg
  KDbg
  KDbg is an open source graphical front-end for the GNU Debugger. KDbg is implemented using the KDE component architecture.- See also :* Data Display Debugger , a Motif debugger front-end* ups...
  
  , a KDE
  KDE
  KDE is an international free software community producing an integrated set of cross-platform applications designed to run on Linux, FreeBSD, Microsoft Windows, Solaris and Mac OS X systems...
  
   debugger front-end
• Xxgdb
  Xxgdb
  Xxgdb is an open source X Window System front-end for gdb. It was adapted from xdbx, which uses the dbx debugger.- See also :* Data Display Debugger , a Motif front-end.* KDbg, a KDE debugger front-end.* ups ....
  
  , an X Window System
  X Window System
  The X window system is a computer software system and network protocol that provides a basis for graphical user interfaces and rich input device capability for networked computers...
  
  debugger front-end