Hub-sample is a project mainly written in JavaScript, it's free.
A Sample Issue Tracker Built on hub.js
This is the start of a sample issue tracker with hub.js (http://github.com/hubjs/hub).
Most of this is based on the following gists, with code converted to the latest hub.js builds:
WebSocket: http://gist.github.com/358550 MemStore: http://gist.github.com/358547 Server: http://gist.github.com/358546 Demo: http://gist.github.com/358544
Currently this application requires a browser with an HTML5 WebSocket implementation and local storage. On Mac OSX your best choice is WebKit.
Alternative non-HTML5 socket implementations
http://github.com/RosePad/Socket.IO http://github.com/RosePad/Socket.IO-node
Also optional:
http://github.com/Guille/node.websocket.js/ (sample chat server)