[Discover] PHP Knowledge Base System Using PHP, MySQL, and Smarty Templates - Lore | pure software http://puresw.com/products/lore/ (social collaboration php base)
 [Discover] Ning - Create your own Social Networks! http://www.ning.com/ (tools social network socialnetworking)
 [Discover] Pligg Content Management System (CMS) http://www.pligg.com/ (cms webdesign tools software)
 [Discover] PlaneShift - A 3D Fantasy MMORPG http://www.planeshift.it/index.html (opensource free mmorpg game)
 [Discover] " Marc Canter: The digital lifestyle aggregator | Between the Lines | ZDNet.com http://blogs.zdnet.com/BTL/?p=3085 (social blogging podcast)
 [Discover] Dabble DB: A better web database to share, manage and explore your information http://dabbledb.com/ (database tools collaboration ajax)
 [Discover] newsvine http://www.newsvine.com/ (news social search community)
 [Discover] Ping the Semantic Web.com - Share your RDF data with the World! http://pingthesemanticweb.com/ (semanticweb rdf search ontology)
 [Discover] mediafly http://www.mediafly.com/Welcome.aspx (podcasts search mit video)
 [Discover] claimID.com - Manage your online identity http://claimid.com/ (tools apps claimid openid)
 [Discover] Keypi : Collaborative Web Tendencies http://www.keypi.com/english/ (statistics keypi social analytics)