pump.io : Social server with an ActivityStreams API. It's a stream server that does most of what people really want from a social network.
kimono : Turn websites into structured APIs from your browser in seconds
OpenCalais : Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, co...
Openframe : Openframe is an open source platform for artists, curators and art enthusiasts to share, discover and display digital art.
Openframe is free. Anyone c...