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What is GNU?

GNU is an operating system that is free softwarethat is, it respects users' freedom. The development of GNU made it possible to use a computer without software that would trample your freedom.

We recommend installable versions of GNU (more precisely, GNU/Linux distributions) which are entirely free software. More about GNU below.

The free software movement campaigns to win for the users of computing the freedom that comes from free software. Free software puts its users in control of their own computing. Non-free software puts its users under the power of the software's developer. See the video explanation.

Free software means the users have the freedom to run, copy, distribute, study, change and improve the software.

Free software is a matter of liberty, not price. To understand the concept, you should think of free as in free speech, not as in free beer.

More precisely, free software means users of a program have the four essential freedoms:

Developments in technology and network use have made these freedoms even more important now than they were in 1983.

Nowadays the free software movement goes far beyond developing the GNU system. See the Free Software Foundation's web site for more about what we do, and a list of ways you can help.

GNU is a Unix-like operating system. That means it is a collection of many programs: applications, libraries, developer tools, even games. The development of GNU, started in January 1984, is known as the GNU Project. Many of the programs in GNU are released under the auspices of the GNU Project; those we call GNU packages.

The name GNU is a recursive acronym for GNU's Not Unix. GNU is pronounced g'noo, as one syllable, like saying grew but replacing the r with n.

The program in a Unix-like system that allocates machine resources and talks to the hardware is called the kernel. GNU is typically used with a kernel called Linux. This combination is the GNU/Linux operating system. GNU/Linux is used by millions, though many call it Linux by mistake.

GNU's own kernel, The Hurd, was started in 1990 (before Linux was started). Volunteers continue developing the Hurd because it is an interesting technical project.

More information

Today's random package

EMMS is the Emacs Multimedia System. It is a small front-end which can control one of the supported external players. Thus, it supports whatever formats are supported by your music player. It also supports tagging and playlist management, all behind a clean and light user interface. (doc)

Short descriptions for all GNU packages

Read more here:
The GNU Operating System and the Free Software Movement