What is open source software?  Definition of open source

Where can I get open source software?  

Sourceforge is a great place.  It is a repository of open source software projects.  You can also do a google search to find software related to different science or education topics.

Open Source Science Software

• http://en.wikipedia.org/wiki/Category:Free_science_software
• http://en.wikipedia.org/wiki/List_of_open_source_software_packages#Science
• http://www.dmoz.org/Science/Software/ (Please note:  this is a mixture of links to commercial and free and open source software)

Open Source Education Software

• http://eduforge.org/softwaremap/trove_list.php
• http://www.dmoz.org/Computers/Open_Source/Software/
• http://www.eduforge.net/

Open Source Software - General

• http://www.osalt.com/
• http://sourceforge.net