script.aculo.us : script.aculo.us provides you with
easy-to-use, cross-browser user
interface JavaScript libraries to make
your web sites and web applications fly.
EnhanceJS : EnhanceJS is a new Javascript framework designed to improve the application of Progressive Enhancement by first testing browser capabilities for key J...
Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
