Free and Open Source
Open Source software is Free Software, and Free software is Open Source software.
- Free refers to what is essential, freedom.
- Open Source is more about the quality of software developed in an open and decentralized manner. Pragamatic marketing.
( This does not mean that the Free software movement, which promotes copyleft, is not pragmatic. )
The OSI's definition of Open Source in one paragraph is similar to the definition of Free software of the FSF:
Open source promotes software reliability and quality by supporting
independent peer review and rapid evolution of source code.
To be OSI certified, the software must be distributed under a license
that guarantees the right to read, redistribute, modify, and use the
- OSI FAQ, which defines Open Source in one paragraph - http://www.opensource.org/advocacy/faq.php
- Freedom or Power ? - http://www.gnu.org/philosophy/freedom-or-power.fr.html
- Why "Free Software" is better than "Open Source" - http://www.gnu.org/philosophy/free-software-for-freedom.html
- Copyleft: Pragmatic Idealism - http://www.gnu.org/philosophy/pragmatic.html