Revolution OS is a 2001 documentary film made in the United States, directed by J.T.S. Moore, which traces the twenty-year history of GNU, Linux, and the open source and free software movements. It features interviews with prominent hackers and entrepreneurs (and hackers-cum-entrepreneurs), including Richard Stallman, Michael Tiemann, Linus Torvalds, Larry Augustin, Eric S. Raymond, Bruce Perens, Frank Hecker and Brian Behlendorf.
The film begins in medias res with glimpses of Raymond, a Linux IPO, Torvalds, the idea of Open Source, Perens, Stallman, then sets the historical stage in the early days of hackers and computer hobbyists when code was shared freely. Change came soon in 1978 as Bill Gates, in his Open Letter to Hobbyists, pointedly prodded hobbyists to pay up. Stallman relates his struggles with closed-source vendors at the MIT Artificial Intelligence Lab, leading to his departure to focus on the development of free software, and the GNU project.