Open Source VS Free Software

Open Source 
Free access to the source code, freely in development, and the free license.

Free Software 
- If the person receives a copy of the software have the freedom.
- Free Software is a matter of liberty, not price.

The Freedom Of Free Software 
- Freedom 0: the freedom to run the program for any purpose.
- Freedom 1: the freedom to study how the program works, and change it to make it do what you want.
- Freedom 2: the freedom to distribute the software, so you can help people around.
- Freedom 3: the freedom to improve the program, and release improvements (and modified versions in General) to the public, so as to benefit the whole people.


Examples Of Free Software
- MySql; relational database
- Apache; Web server
- Sendmail; mail transport agent
- Latex; typesetting systems.
- the LibreOffice; Office suite
- Emacs; text editor
- GIMP; drawing and raster image editor
- etc

The Advantages Of Free Software
- Free to use
- Free to access
- Free to develop
- Free to redistribute
- Free from price

The Weakness Of Free Software 
- Update Path
- Security