The document discusses the history and definitions of open source software. It describes how the Free Software Foundation started in 1984 to create GNU, and how Linux was created in 1991 by Linus Torvalds. It defines open source software as software with source code available and a license allowing users to study, change and improve the software. The document contrasts the definitions of free software and open source software, and discusses how open source software development is community-driven with global collaboration.