Note: This page is a work in progress. I plan to update this page with new technologies as I find them and increase the information on each as I find the time. If you have any questions or find a technology that should be listed please email me .
Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality to web and mobile apps.
A hosted platform that takes the pain out of building real-time-enabled websites and applications
Fleck is a WebSocket server implementation in C#. Fleck requires no inheritance, container, or additional references.
A PHP 5.3 (PSR-0 compliant) component library for serving/consuming sockets and building socket based applications. Build up your application (like Lego!) through simple interfaces using the decorator and command patterns. Re-use your application without changing any of its code just by wrapping it in a different protocol.
WebSocket module for Apache
Implementation of the Socket.IO Websocket emulation protocol in Python on top of the non-blocking Tornado Web Framework.
Slanger is an open source server implementation of the Pusher protocol written in Ruby.
EventMachine based, async, Ruby WebSocket server.