Cross-platform
Build your own social network, dating site or online club with free, powerful open-source software that you host, control, customize and extend. (CC)
Cross-platform
Elgg is an open, flexible social networking engine, designed to run at the heart of any socially-aware application. (GPL)
Cross-platform
Built with Ruby on Rails, Lovd is a social networking solution that has everything you need to build your community. (MIT)
Cross-platform
Pligg CMS provides social networking software that encourages visitors to register on your website so that they can submit content and connect with other users. (AGPL)
Popularity: 8% [?]
