Tealfeed - A knowledge sharing platform to empower creators
EchoWaves - Opensource Social Group Chat written in Ruby On Rails
Lunyr - A decentralized crowdsourced encyclopedia.
Shtuff Chat - Free Group / Team chat with persistent history.
BoostHQ - An online community platform for your employees to gain knowledge, share experiences and learn from each other.
Anologue - Disposable online chat.