What is GNU?

The GNU Project was launched in 1984 to develop a complete Unix-like operating system which is free software: the GNU system.

GNU's kernel wasn't finished, so GNU is used with the kernel Linux. The combination of GNU and Linux is the GNU/Linux operating system, now used by millions. (Sometimes this combination is incorrectly called Linux.)

There are many variants or “distributions” of GNU/Linux. We recommend the GNU/Linux distributions that are 100% free software; in other words, entirely freedom-respecting.

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.

What is Free 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”.

Free software is a matter of the users' freedom to run, copy, distribute, study, change and improve the software. More precisely, it refers to four kinds of freedom, for the users of the software:

* The freedom to run the program, for any purpose (freedom 0).

* The freedom to study how the program works, and adapt it to your needs (freedom 1). Access to the source code is a precondition for this.

* The freedom to redistribute copies so you can help your neighbor (freedom 2).

* The freedom to improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). Access to the source code is a precondition for this.

What is the Free Software Foundation?

The Free Software Foundation (FSF) is the principal organizational sponsor of the GNU Project. The FSF receives very little funding from corporations or grant-making foundations but relies on support from individuals like you.

Please consider helping the FSF by becoming an associate member, buying manuals and gear or by donating money. If you use Free Software in your business, you can also consider corporate patronage or a deluxe distribution of GNU software as a way to support the FSF.

The GNU project supports the mission of the FSF to preserve, protect and promote the freedom to use, study, copy, modify, and redistribute computer software, and to defend the rights of Free Software users. We support the freedoms of speech, press, and association on the Internet, the right to use encryption software for private communication, and the right to write software unimpeded by private monopolies. You can also learn more about these issues in the book Free Software, Free Society.

The FSF also has sister organizations in Europe, Latin America and India.