|This article relies on references to primary sources. (January 2013)|
The GNU Project i// is a free software, mass collaboration project, announced on 27 September 1983, by Richard Stallman at MIT. Its aim is to give computer users freedom and control in their use of their computers and computing devices, by collaboratively developing and providing software that is based on the following freedom rights: users are free to run the software, share it (copy, distribute), study it and modify it. GNU software guarantees these freedom-rights legally (via its license), and is therefore free software; the use of the word "free" always being taken to refer to freedom.
In order to ensure that the entire software of a computer grants its users all freedom rights (use, share, study, modify), even the most fundamental and important part, the operating system (including all its numerous utility programs), needed to be written. The founding goal of the project was, in the words of its initial announcement, to develop "a sufficient body of free software [...] to get along without any software that is not free." Stallman decided to call this operating system GNU (a recursive acronym meaning "GNU's not Unix"), basing its design on that of Unix; however, in contrast to Unix which was proprietary software, GNU was to be freedom-respecting software (free software) that users can use, share, study and modify. Development was initiated in January, 1984. The goal of making a completely free software operating system was achieved in 1992 when the third-party Linux kernel was released as free software, under version 2 of the GNU General Public License, to be used with the GNU software stack.
The project's current work includes software development, awareness building, political campaigning and sharing of the new material.
When the GNU project first started they "had an Emacs text editor with Lisp for writing editor commands, a source level debugger, a yacc-compatible parser generator, and a linker". The GNU system required its own C compiler and tools to be free software, so that these also had to be developed. By June 1987 the project had accumulated and developed free software for an assembler, an almost finished portable optimizing C compiler (GCC), an editor (GNU Emacs), and various Unix utilities (such as
ld). They had an initial kernel that needed more updates.
Once the kernel and the compiler were finished GNU was able to be used for program development. The main goal was to create many other applications to be like the Unix system. GNU was able to run Unix programs but was not identical to it. GNU incorporated longer file names, file version numbers, and a crashproof file system. The GNU Manifesto was written to gain support and participation from others for the project. Programmers were encouraged to take part in any aspect of the project that interested them. People could donate funds, computer parts, or even their own time to write code and programs for the project.
The GNU Manifesto was written by Richard Stallman to gain support and participation in the GNU Project. In the GNU Manifesto, Stallman listed four freedoms essential to software development: freedom to run a program for any purpose, freedom to study the mechanics of the program and modify it, freedom to redistribute copies, and freedom to improve and change modified versions for public use. To implement these freedoms, users needed full access to code. To ensure code remained free and provide it to the public, Stallman created the GNU General Public License (GPL), which allowed software and the future generations of code derived from it to remain free for public use. Some complications arose, however, when certain software was grandfathered in the law of GPL because of code from which it derived.
Philosophy and activism
Although most of the GNU Project's output is technical in nature, it was launched as a social, ethical, and political initiative. As well as producing software and licenses, the GNU Project has published a number of writings, the majority of which were authored by Richard Stallman.
Within the GNU website a list of projects are laid out and each project has specifics for what type of developer is able to perform the task needed for a certain piece of the GNU project. The skill level ranges from project to project but anyone with background knowledge in programming is encouraged to support the project.
The GNU project uses software that is free for users to copy, edit, and distribute. It is free in the sense that users can change the software to fit individual needs. The way programmers obtain the free software depends on where they get it. The software could be provided to the programmer from friends or over the Internet, or the company a programmer works for may purchase the software.
Proceeds from associate members, purchases and donations support the GNU project. 
Copyleft is what helps maintain free use of this software among other programmers. Copyleft gives the legal right to everyone to use, edit, and redistribute programs or program's code as long as the distribution terms do not change. As a result, any user who obtains the software legally has the same freedoms as the rest of its users do.
The GNU Project and the FSF sometimes differentiate between "strong" and "weak" copyleft. "Weak" copyleft programs typically allow distributors to link them together with non-free programs, while "strong" copyleft strictly forbids this practice. Most of the GNU Project's output is released under a strong copyleft, although some is released under a weak copyleft or a permissive free software license.
Operating system development
The first goal of the GNU project was to create a whole free-software operating system. By 1992, the GNU project had completed all of the major operating system components except for their kernel, GNU Hurd. With the release of the Linux kernel, started independently by Linus Torvalds in 1991 and released under the GPL with version 0.12 in 1992, for the first time it was possible to run an operating system composed completely of free software. Though the Linux kernel is not part of the GNU project, it was developed using GCC and other GNU programming tools.
Today a stable version (or variant) of GNU can be run by combining the GNU packages with the Unix-like kernel Linux. The GNU project calls this GNU/Linux, and the defining features are the combination of:
- GNU packages (except for GNU Hurd)
The GNU packages consists of numerous operating system tools and utilities (shell, coreutils, compilers, libraries, etc.) including a library implementation of all of the functions specified in POSIX System Application Program Interface (POSIX.1). The GCC compiler can generate machine-code for a large variety of computer-architectures.
- Linux kernel - this implements program scheduling, multitasking, device drivers, memory management, etc. and allows the system to run on a large variety of computer-architectures. Linus Torvalds released the Linux kernel under the GNU General Public License in 1992; it is however not part of the GNU project.
- non-GNU programs
The packaging of GNU tools, together with the Linux kernel and other programs, is usually called a Linux distribution (distro). The GNU Project calls the combination of GNU and the Linux kernel "GNU/Linux", and asks others to do the same, resulting in the GNU/Linux naming controversy.
Today most distros combine GNU packages with a Linux kernel which contains proprietary binary blobs and a number of proprietary programs (e.g. gratis but without availability of source code, thus non-free). They are free to do so, but it goes directly against the freedom goals of the GNU project; these freedom goals being the reason why the GNU project was started in the first place.
The GNU project itself only endorses distros, that are a combination of GNU packages with a Linux-libre kernel (a modified Linux kernel, that removes proprietary binary blobs) and consist only of free software (eschewing proprietary software entirely); these distros are usually based on modifications of the Debian distro, making it completely free of proprietary software availability. It is possible to obtain an entirely free (freedom-respecting) system using other distros such as Debian itself. However, these distros include e.g. an online package database that also includes non-free software (i.e. zero-price, but without source). Therefore, the GNU project does not endorse them, since it maintains that this may guide users towards non-free software.
From the mid-1990s onward, with many companies investing in free software development, the Free Software Foundation redirected its funds toward the legal and political support of free software development. Software development from that point on focused on maintaining existing projects, and starting new projects only when there was an acute threat to the free software community. One of the most notable projects of the GNU Project is the GNU Compiler Collection, whose components have been adopted as the standard compiler system on many Unix-like systems.
The GNOME desktop effort was launched by the GNU Project because another desktop system, KDE, was becoming popular but required users to install certain proprietary software. To prevent people from being tempted to install that proprietary software, the GNU Project simultaneously launched two projects. One was the Harmony toolkit. This was an attempt to make a free software replacement for the proprietary software that KDE depended on. Had this project been successful, the perceived problem with the KDE would have been solved. The second project was GNOME, which tackled the same issue from a different angle. It aimed to make a replacement for KDE that had no dependencies on proprietary software. The Harmony project didn't make much progress, but GNOME developed very well. Eventually, the proprietary component that KDE depended on (Qt) was released as free software.
Gnash is a software application designed to play content distributed in the Adobe Flash format. This has been marked as a priority project by GNU because it was seen that many people were installing a free software operating system and using a free software web-browser, but were then also installing the proprietary software plug-in from Adobe.
GNU Enterprise (GNUe) is a meta-project started in 1996 and can be regarded as a sub-project of the GNU Project. GNUe's goal is to create free "enterprise-class data-aware applications" (enterprise resource planners etc.). GNUe is designed to collect Enterprise software for the GNU system in a single location (much like the GNOME project collects Desktop software).
In 2001 the GNU Project received the USENIX Lifetime Achievement Award for "the ubiquity, breadth, and quality of its freely available redistributable and modifiable software, which has enabled a generation of research and commercial development".
- "What is GNU?". The GNU Operating System. Free Software Foundation. 4 September 2009. Retrieved 9 October 2009. "The name "GNU" is a recursive acronym for "GNU's Not Unix!"; it is pronounced g-noo, as one syllable with no vowel sound between the g and the n."
- "The GNU Manifesto". Free Software Foundation. 21 July 2007. Retrieved 2007-11-10.
- Richard Stallman. "new Unix implementation".
- Wardrip-Fruin, Noah; and Nick Montfort. "The GNU Manifesto." The NewMediaReader. Cambridge, Massachusetts: MIT, 2003. pp.545-550.
- GNU's Bulletin, vol. 1 no. 3 (June 1987) (gnu.org)
- Weber, S. (2004). The Success of Open Source. Cambridge: Harvard University Press.
- Helping the GNU Project and the Free Software Movement - GNU Project - Free Software Foundation. Gnu.org. Retrieved on 2013-07-17.
- Linus Benedict Torvalds (26 August 1991). "What would you like to see most in minix?". comp.os.minix.
- All GNU packages (gnu.org)
- GNU @ Free Software Directory (fsf.org)
- POSIX - The GNU C Library
- GCC Architectures
- The Linux Kernel Archives
- Release Notes for Linux v0.12
- Should the GNU/name convention be applied to all programs that are GPL'ed? GNU/Linux FAQ by Richard Stallman
- Why do you write “GNU/Linux” instead of “GNU Linux”? GNU/Linux FAQ by Richard Stallman
- Isn't it wrong for us to label Linus Torvalds' work as GNU? GNU/Linux FAQ by Richard Stallman
- Does Linus Torvalds agree that Linux is just the kernel? GNU/Linux FAQ by Richard Stallman
- Boost at the FSF directory
- Non-GNU programs at the FSF directory
- Why do you call it GNU/Linux and not Linux?
- Free GNU/Linux distributions (gnu.org)
- Guidelines for Free System Distributions (gnu.org)
- gNewSense FAQ
- Avoiding Ruinous Compromises (gnu.org)
- Explaining Why We Don't Endorse Other Systems (gnu.org)
- Richard Stallman (5 September 2000). "Stallman on Qt, the GPL, KDE, and GNOME". Linux Today. Retrieved 2005-09-09.
- Community History
- "USENIX Lifetime Achievement Award ("The Flame")". USENIX. Retrieved 2007-12-05.