This almost non-technical presentation first covers Free Software and Open Source licenses, and gives details about Free operating systems and applications, in particular about GNU / Linux. It then highlights key projects and tries to explain why they are successful.

A general overview on Free Software and Open Source. Very useful to understand before dwelving into technical details.

This presentation is released under the terms of the Creative Commons Attribution-ShareAlike 2.5 license. It is available in several formats:

• PDF
  English, Portuguese (Brazil)
• OpenDocument format
  English, Portuguese (Brazil)
• HTML
  English, Portuguese (Brazil)

Corrections, suggestions, contributions and translations are welcome!