Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Zepto.js : Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API. If you use jQuery, you already know how to use Zept...
meSing.js : meSing.js is a JavaScript singing synthesis library that uses the Web Audio API's DSP capabilities in conjunction with the meSpeak.js speech synthesis...
Modest Maps | Home : Modest Maps is a small, extensible, and free library for designers and developers who want to use interactive maps in their own projects.
Filtrr2 is a JavaScript image manipulation library. Think of it as Instagram filters on the browser. It uses the <canvas> element to paint filtered pictures in the place of normal pictures on your website.