The four dimensions of free software

• Free software is a license model
  • the four software freedoms by Richard Stallman, 1985
  • the open source definition, 1998
• Free software development models
  • the cathedral and the bazaar
• Free software social ideals
  • free software is about freedom and society, quality and convenience may come as a consequence
  • open source is about quality and convenience, freedom may come as a consequence
• Free software communities
  • hackers, groups and mailing lists