Social web

  • Elgg.com - a powerful open source social networking platform.
    http://www.elgg.com/
    Elgg makes a powerful social hub for your organization.
  • Ning
    http://www.ning.com/
    The World's Largest Platform for Creating Social Websites™
  • OpenSocial
    http://www.opensocial.org/
    Everyone works together to iterate on the OpenSocial Specification and collaborate on the OpenSocial Wiki. Whether you're writing an app, a social network, or a proposal for the spec, learn how you can get involved and share your ideas with other developers.