Matrix : Matrix is an open standard for decentralised communication, providing simple HTTP APIs and open source reference implementations for securely distribu...
GoCD : Open source continuous delivery server to model and visualize complex workflows with ease. Automate and streamline your build-test-release cycle for r...
Sympl : Sympl is a collection of open-source scripts and templates which allow you to automatically and efficiently configure your website and email on a virt...
deepstream.io : A Scalable Server for Realtime Web Apps
Stores and syncs data in realtime
Built in node.js
Works for browsers, backend & mobile
Scales via clustering...
websocketd is the WebSocket daemon
It takes care of handling the WebSocket connections,
launching your programs to handle the WebSockets,
and passing messages between programs and web-browser.