- Author: Dean Elsner Jay Fenlason
- Language: English
- Year: 2002
- Author: Richard Stallman
- Language: English
- Year: 2015
- Author: Richard Stallman
- Language: English
- Year: 2015
- Author: Sam Williams, Richard M. Stallman
- Language: English
- Year: 2010
- Author: Richard M. Stallman Lawrence Lessig Joshua Gay
- Language: English
- Year: 2002
- Author: Richard M. Stallman
- Language: English
- Year: 2012
- Author: Robert J Chassell, Free Software Foundation (Cambridge Mass.)
- Language: English
- Year: 1997
Free as in Freedom
epub
- Author: Sam Williams 2nd edition revisions by Richard Stallman
- Language: English
- Year: 2010
- Author: Richard Stallman
- Language: English
- Year: 2010