GNU Project
The GNU Project began in 1984 when Richard Stallman wrote a UNIX compatible operating system and gave it away for free. The GNU Project is also dedicated to eliminating restrictions on copying, redistribution, understanding, and modification of computer programs. GNU Project
The home for Project GNU.
Cygnus Solutions
Cygnus provides single-source, UNIX, and Win32 desktop and cross-platform development tools for 32- and 64-bit microcontrollers.