GNU is free software: everyone is free to copy it and redistribute it, as well as to make changes either large or small. Non-free software keeps users divided and helpless, forbidden to share it and unable to change it. A free operating system is essential for people to be able to use computers in freedom.
Today, Linux-based variants of the GNU system, based on the kernel Linux developed by Linus Torvalds, are in widespread use. There are estimated to be some 20 million users of GNU/Linux systems today.
Richard Stallman is the principal author of the GNU Compiler Collection, a portable optimizing compiler which was designed to support diverse architectures and multiple languages. The compiler now supports over 30 different architectures and 7 programming languages.
„Every nonfree program has a lord, a master--and if you use the program, he is your master.“
(Richard Stallman, Interview LinuxDevCenter 22.12.2004)