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
Frappe Charts : GitHub-inspired simple and modern charts for the web with zero dependencies.
howler.js : howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio.
ActiveJS : ActiveJS is a JavaScript application framework that provides local and REST based data modeling and pure DOM view construction with back button and hi...
yepnope.js : A Conditional Loader For Your Polyfills!
JavaScript Libraries for adding offline support to web apps.