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Richard Matthew Stallman (born March 16, 1953) is an American computer scientist, software developer, columnist, engineer, and programmer, known for his work in the free software movement. Born in Manhattan, United States, Stallman has a notable educational background from Harvard University, the Massachusetts Institute of Technology (MIT), and the Harvard John A. Paulson School of Engineering and Applied Sciences.
He founded the free software movement and is widely recognized for his creation of Emacs, a configurable and extensible text editor. Stallman's other notable works include the GNU Manifesto, GNU General Public License, GNU Compiler Collection, GNU Debugger, Free Software Song, The Right to Read, and GNU Emacs.
Richard Stallman is also known by his pseudonyms Saint IGNUcius and rms.