"Richard M. Stallman (born March 16, 1953), often
shortened to RMS, is an American software freedom activist and
computer programmer. In September 1983, he launched the GNU Project
to create a free Unix-like operating system, and has been the
project's lead architect and organizer. With the launch of the GNU
Project, he initiated the Free Software Movement; in October 1985
he founded the Free Software Foundation.
"Richard Stallman pioneered the concept of Copyleft and he is
the main author of several copyleft licenses including the GNU
General Public License, the most widely used Free Software license.
Since the mid-1990s, Richard Stallman has spent most of his time
advocating for Free Software, as well as campaigning against both
software patents and what he sees as excessive extension of
copyright laws. Stallman has also developed a number of pieces of
widely used software, including the original Emacs, the GNU
Compiler Collection (GCC), the GNU Debugger (GDB), and many tools
in the GNU Coreutils. He co-founded the League for Programming
Freedom in 1989."