jQuery UI Development & Planning Wiki / Essential Controls List
jQuery Plugins Toolbox
List of jQuery plugins
TextMate Bundle for jQTouch : Jonathan Stark
Sweeet
jQTouch
AjQuery plugin for mobile web development on the iPhone, iPod Touch, and other forward-thinking devices.
node.js
Node's goal is to provide an easy way to build scalable network programs
Closure Tools - Google Code
Open source JavaScript compiler, debugger, library, and templating system from Google
Jeditable
Edit In Place Plugin For jQuery