Linux

Linux was created by Linus Torvalds. On August 25th, 1991, he asks in a newsgroup “What would you like to see most in Minix?” in which he announces that he was “doing a (free) operating system.” . Linux was officially released as version 0.02 on October 5, 1991. Since then, many companies built models off the Open software, like Red Hat, Corel and Ubuntu

reference: Wikazine -Linux