gnu.org

About

GNU is a free software operating system and a collection of computer software. It provides users with the freedom to run, study, modify, and distribute the software, adhering to the principles of free software as defined by the GNU Project.

It is primarily used by developers, system administrators, and users who value open-source principles and desire a high degree of control and transparency over their computing environment. GNU forms the foundation for many popular operating systems, most notably GNU/Linux distributions.