Web Forms : Web Forms 2.0 Cross-Browser Implementation
Rickshaw : Rickshaw is a JavaScript toolkit for creating interactive time series graphs.
Microjs : Fantastic Micro-Frameworks and Micro-Libraries for Fun and Profit!
Bliss.js : Want to use Vanilla JS but find native APIs a bit unwieldy? Bliss is for you
impress.js : It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com
A Modern, Lightweight Open-Source JavaScript Library for Interactive Maps
