GNU

GNU, which stands for "GNU's Not Unix," is a free software project founded by Richard Stallman in 1983. Its goal is to create a complete, free operating system that is compatible with Unix. GNU provides users with the freedom to run, modify, and share software without restriction. The project includes many essential tools and applications, such as compilers and text editors. GNU is significant in the world of open-source software, promoting the idea that software should be freely accessible and collaborative, ultimately laying the groundwork for popular systems like Linux.