DOMAssistant : The modular lightweight JavaScript library, with CSS selectors, event handling, AJAX and complete Unicode support
Intern : Intern is a complete test system for JavaScript designed to help you write and run consistent, high-quality test cases for your JavaScript libraries a...
TraceKit : Not all browsers support stack traces on error objects, but TraceKit squeezes out as much useful information as possible and normalizes it.
PouchDB : PouchDB is a JavaScript library that allows you to store and query data for web applications that need to work offline, and sync with an online databa...
Wave.js : Audio visualizer library for javascript. Create dynamic animations that react to an audio file or audio stream.
JavaScript Libraries for adding offline support to web apps.