Activity Streams Websites
The Source for Social Data - Gnip
Gnip offers a number of Historical streams that give you complete and comprehensive access to every publicly available Tweet, ever.
94,852 
$ 87,840.00
Chris Messina's FactoryCity
The personal blog and website of Chris Messina related to open web technologies, the Diso Project, OAuth, and OpenID.
163,570 $ 42,000.00
CatchApp - Track and monitor your teams activity
The pulse of work: CatchApp is the easiest way to catch up with everything your team is working on. See what's going on, gain insights and take action.
378,114 $ 13,500.00