Oxwall : Oxwall is unbelievably flexible and easy to use PHP/MySQL community software platform.
Oxwall

Oxwall Screenshot
Overview
Oxwall is unbelievably flexible and easy to use PHP/MySQL community software platform. Oxwall is used for a wide range of projects starting from family sites and custom social networks to collaboration tools and enterprise community solutions.

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Features

  • Realtime activity notifications, newsfeed, instant chat
  • Photo, Video sharing
  • Blogs, forums, wiki
  • Groups, events, friends
  • Comment, tag, rate any kind of content
  • Privacy and profile customization
  • Collaboration, file sharing, video-conference tools