Mockingbird : Mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application.
re:dash : Query Editor: think of JS Fiddle for SQL queries. It's your way to share data in the organization in an open way, by sharing both the dataset and the ...
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js