rsvp.js : A lightweight library that provides tools for organizing asynchronous code
Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Protovis : Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for vi...
The Dojo Toolkit : Dojo saves you time and scales with your development process, using web standards as its platform. It’s the toolkit experienced developers turn to for...
Web Forms : Web Forms 2.0 Cross-Browser Implementation
Automatic and enhanced Google Analytics tracking for common user interactions on the web.