Theia : Theia is an open-source cloud & desktop IDE framework implemented in TypeScript.
Zulip : Zulip is a powerful, open source group chat application that combines the immediacy of real-time chat with the productivity benefits of threaded conve...
Fragment : Fragment is a collaborative cross-platform audiovisual live coding environment with pixels based real-time image-synth approach to sound synthesis, th...
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js