Socket.io - Realtime application framework (Node.JS server)
gevent - gevent is a coroutine -based Python networking library that uses greenlet to provide a high-level...
greenlet - Lightweight in-process concurrent programming
Lightstreamer - Lightstreamer is a server for delivering real-time messages to browser-based and mobile...
eventlet - Eventlet is a concurrent networking library for Python that allows you to change how you run your...
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.