IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Socket.io - Realtime application framework (Node.JS server)
SignalR - SignalR is a server-side software system designed for writing scalable Internet applications, notably web servers.
gevent - gevent is a coroutine -based Python networking library that uses greenlet to provide a high-level...
Atmosphere Framework - atmosphere - Realtime Client Server Framework for the JVM, supporting WebSockets and Cross-Browser...
WebSocket-Node - A WebSocket Implementation for Node.JS ( Draft -08 through the final RFC 6455 )