Social Networks

Friendica

Friendica is an open source, free social web server running on the popular LAMP stack. Think WordPress or Drupal, but for social. It is a mature platform with over two years of development behind it, and provides a wide range of connectors to both legacy and indie social networks. Your "friends" can be from Facebook, Diaspora, Twitter, StatusNet, pump.io, weblogs and RSS feeds - and even email. No other project has ever brought together the social universe into a single federated stream to this degree.

There are currently 383 Commons-Based Peer Production cases!