C mobileOK Checker. Who Owns Your Great Idea? Top 40 Free Downloadable Open Source Social Networking Software. This is Vivalogo's list of best free, downloadable, open source social networking software / scripts (kinda hard to say all these words :) ).
Unlike some other lists you may find on the net, this one contains only really downloadable and functional software.Note: listed in no particular order. SocialEngine SocialEngine is social networking software powered by PHP and Zend.