Debian is a Unix-like computer operating system that is composed entirely of free software and packaged by a group of individuals participating in the Debian Project.
The Debian Project was first announced in 1993 by Ian Murdock, Debian 0.01 was released on September 15, 1993, and the first stable release was made in 1996.
The Debian stable release branch is the most popular Debian edition for personal computers and network servers, and has been used as a base for many other distributions.