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Free and open source software



 
 
Free and open source software, also F/OSS, FOSS, or FLOSS (for 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...
/Libre
Gratis versus Libre

Gratis versus libre is the distinction between "for zero price" and "freedom" . wiktionary:gratis appears in many English dictionaries, including the Oxford English Dictionary....
/Open Source Software
) is software which is liberally licensed to grant the right of users to study, change, and improve its design through the availability of its source code
Source code

In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language....
. This approach has gained both momentum and acceptance as the potential benefits have been increasingly recognized by both individuals and corporate players.

'F/OSS' is an inclusive term generally synonymous with both free software
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...
 and open source software which describe similar development models, but with differing cultures and philosophies.






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Free and open source software, also F/OSS, FOSS, or FLOSS (for 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...
/Libre
Gratis versus Libre

Gratis versus libre is the distinction between "for zero price" and "freedom" . wiktionary:gratis appears in many English dictionaries, including the Oxford English Dictionary....
/Open Source Software
) is software which is liberally licensed to grant the right of users to study, change, and improve its design through the availability of its source code
Source code

In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language....
. This approach has gained both momentum and acceptance as the potential benefits have been increasingly recognized by both individuals and corporate players.

'F/OSS' is an inclusive term generally synonymous with both free software
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...
 and open source software which describe similar development models, but with differing cultures and philosophies. 'Free software' focuses on the philosophical freedoms it gives to users and 'open source' focuses on the perceived strengths of its peer-to-peer development model. Many people relate to both aspects and so 'F/OSS' is a term that can be used without particular bias towards either camp.

Free software licenses and Open-source license
Open-source license

An open source license is a copyright license for computer software that makes the source code available under terms that allow for modification and redistribution without having to pay the original author....
s are used by many software packages
List of open source software packages

This is a list of Free software / open-source software packages: computer software licensed under an open-source license / Free software license....
. The licenses have important differences, which mirror the differences in the ways the two kinds of software can be used and distributed and reflect differences in the philosophy behind the two.

Today the terms "free software" and "free open source software" (FOSS) and "free libre open source software" (FLOSS) generally mean the same thing. Despite disagreements about independently important but relatively minor differences, the simple term "open source" originally had the same meaning as FOSS/FLOSS for several years, nicely guarded, but not trademarked, by the Open Source Initiative
Open Source Initiative

The Open Source Initiative is an organization dedicated to promoting open-source software.The organization was founded in February 1998, by Bruce Perens and Eric S....
. However, by enough companies were opening some source to hop on the open source bandwagon, while keeping other advanced functionality closed, that the common meaning of "open source" came to include what is now called "Commercial Open Source Software" (COSS
Commercial Open Source Software

Commercial Open Source Software contains some elements of Free and Open Source Software in order to legitimately claim to be "open source", however also limits availability of some generally enhanced functionality to proprietary software which it sells under a closed and limited license....
) as well. Today either the specific terms free software/FOSS/FLOSS or COSS are often used instead of the more general term "open source" in order to differentiate between the two different models and preserve the original meaning of the free software/FOSS/FLOSS space.

Industry support

In January 2008 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) announced software governance initiative to address the legal, financial and security risks connected with the adoption of FOSS. The project is supported by other companies like OpenLogic, Google
Google

Google Inc. is an United States public company, earning revenue from AdWords related to its Google search, Gmail, Google Maps, Google Apps, Orkut, and YouTube services as well as selling advertising-free versions of the Google Search Appliance....
 and 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....
. HP generated over USD$10 billion revenue on sales of open source-related products in the past few years. More than 22 percent of shipped units and 17 percent of the company's server revenues came from this source in the last two quarters of 2008. FOSSology is a tool for tracking and monitoring the use of free and open-source software within an IT environment and is available under the terms of the GNU General Public License
GNU General Public License

The GNU General Public License is a widely used free software license, originally written by Richard Stallman for the GNU project. The GPL is the most popular and well-known example of the type of strong copyleft license that requires derived works to be available under the same copyleft....
 (version 2), FOSSBazaar is a web site that hosts discussion groups and information resources on how to adopt and manage free/open source code.

See also

  • Alternative terms for free software
    Alternative terms for free software

    Alternative terms for free software have been a controversial issue among free software users from the late 1990s onwards. Coined in 1983 by Richard Stallman, "free software" is used to describe software which can be used, modified, and redistributed with little or no restriction....
  • Floss manuals
    Floss manuals

    The FLOSS Manuals is a non-profit foundation founded in 2006 and based in the Netherlands. The foundation is focused on the creation of quality documentation about how to use free software....
  • Free software community
    Free software community

    The free software community is an informal term referring to the users and developers of free software as well as supporters of the free software movement....
  • Graphics hardware and FOSS
  • Hacker Culture
  • Open source licenses
  • Open source software
  • Software wars
    Software wars

    Software wars describes a state where software authors and users argue over which software is best for a purpose and should thus be used by everyone for that task....


Further reading

  • Peter H. Salus (2005-03-28), , Groklaw
    Groklaw

    Groklaw is an award-winning website covering legal news of interest to the free and open-source software community. Started as a blog on May 16 2003 by paralegal Pamela Jones at Radio UserLand, it has covered issues such as: the SCO-Linux controversies; the European Union v....
    .
  • David A. Wheeler
    David A. Wheeler

    David A. Wheeler is a computer scientist . He is best known for his work on Open source software/Free software and Computer security....
     (2007-04-16), .


External links

  • — community for free and open source software governance
  • (mit.edu)
  • - Wiki on FOSS history, organizations, licenses, people, software.