GNU Emacs

GNU is a Unix-like operating system that is free software. It is developed by the GNU Project and aims to provide a complete system that respects user freedom. The GNU operating system includes a kernel (GNU Hurd), system libraries, utilities, and applications.

It is used by developers, system administrators, and anyone who values free and open-source software. GNU provides the foundation for many Linux distributions, offering a robust and customizable computing environment for a wide range of tasks.