I have been looking at Open source social networking tools. Some of the interesting options are - Elgg, Mahara, XOPPS with YOGURT, Dolphin, Pinax. I was amazed to see how easy it is to develop our own social networking environment using these tools.
Following are some of the features of Elgg and Mahara -
3. 760 plugins available for various functionality.
4. GNU General Public License, version 2.
5. Relatively new project.
1. user centred environment with a permissions framework that enables different views of an e-portfolio to be easily managed. Mahara also features a weblog, resume builder and social networking system, connecting users and creating online learner communities.