Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
EnhanceJS : EnhanceJS is a new Javascript framework designed to improve the application of Progressive Enhancement by first testing browser capabilities for key J...
yepnope.js : A Conditional Loader For Your Polyfills!
Rickshaw : Rickshaw is a JavaScript toolkit for creating interactive time series graphs.
JSDB.io : JSDB is a collection of the best javascript libraries
A Modern, Lightweight Open-Source JavaScript Library for Interactive Maps