Apache Shindig

オープンソーシャルでPlatformを用意するならApache Shindig。（JAVAとPHP）
Apache Shindig is a container for hosting social application consisting of four parts:

• Gadget Container JavaScript
• Gadget Rendering Server
• OpenSocial Container JavaScript
• OpenSocial Data Server

Apache Shindig
http://shindig.apache.org/

OpenSocial
http://www.opensocial.org/
http://www.opensocial.org/page/specs-1