SWIG

Preferred license: New BSD license
SWIG is a tool for making it easy to expose C/C++ code code for use from a variety of high level programming languages. The number of supported languages now stands at 18 and includes most mainstream languages such as Python, Java, C#, Ruby and Perl. The organisation is the community involved in maintaining SWIG.
Actual source code produced by the student participants in Google Summer of Code™ for SWIG can be found here.
 
Current Projects
by Haoyu Bai, mentored by Richard John Boulton
by Jan Jezabek, mentored by Ian Appru
by Cheryl Marie Foil, mentored by Olly Betts
by Maciej Drwal, mentored by William S Fulton