Shtuff Chat - Free Group / Team chat with persistent history.
Lunyr - A decentralized crowdsourced encyclopedia.
JabbR - A chat application built with ASP.NET and SignalR.
Tealfeed - A knowledge sharing platform to empower creators
Smarsh Instant Messenger - smarshIM Mobile is a free application download that requires a paid account on the smarshIM service...
Noat Cards - A knowledge learning and sharing platform