9. Richard Stallman
Stallman was a student and programmer at the MIT Artificial Intelligence Lab. He was already open source and retaliated at MIT against the restriction of computer use in the laboratory. In the university a password-protected computer system was established for students. He decrypted the passwords and sent to the users in plain text, and proposed to give up the password to again in the future to enable anonymous access. SEE ALSO: Top 20 youngest billionaires in the world 2015 – See who’s #1 (With Pictures)
Later Stallman developed the GPL General Public License and the GNU operating system, a completely free Unix system.