WebSocket emulation - Node.js server
WebSocket & WAMP in Java for Android and Java 8
Distributed WebSocket Application Server ISO 20922
C++ websocket client/server library
A Lightweight and fully asynchronous WebSocket client library
A WebSocket library optimized for multiplayer JS games
Python binding to the libindi library
REST and websockets C++ library
WebSocket(RFC-6455) library written using Swift
PHP microframework designed to build a RestApi
RPC library for .NET with auto JavaScript client code generation
Karellen Gevent Websocket Library
a single patch for direct communications between Pd and web browsers
An easy way to make WebSocket endpoints in C++.
WebSocket library written in C.
Easy to use C websocket library
WebSocket Library for .NET4.5