Richard Stallman(Father of Free Software Foundation)

Richard Matthew Stallman (frequently abbreviated to RMS) (born March 16, 1953) is the founder of the free software movement, the GNU Project, the Free Software Foundation, and the League for Programming Freedom. An acclaimed hacker, his major accomplishments include Emacs (and the later GNU Emacs), the GNU C Compiler, and the GNU Debugger. He is also the author of the GNU General Public License (GNU GPL or GPL), the most widely used free software license, which pioneered the concept of the copyleft.
Since the mid-1990s, Stallman has spent most of his time as a political campaigner, advocating free software and campaigning against software patents and expansions of copyright law. The time that he still devotes to programming is spent on GNU Emacs. He supports himself by being paid for around half of the speeches he gives.