William John Sullivan (more commonly known as John Sullivan) (born December 6, 1976) is a software freedom activist, hacker, and writer. John is currently executive director of the Free Software Foundation, where he has worked since early 2003. He is also a speaker and webmaster for the GNU Project. He also maintains of the Plannermode and delicious-el packages for the GNU Emacs text editor.
Until 2007, John was the main contact behind the Defective by Design, BadVista and Play Ogg campaigns. He also served as the chief-webmaster for the GNU Project, until July 2006.