jquip : Smaller, Lighter, Faster, more modular jQuery - include only the parts you want! Don't use it, Don't include it.
Band.js : An interface for the Web Audio API that supports rhythms, multiple instruments, repeating sections, and complex time signatures.
SoundManager 2 : Using HTML5 and Flash, SoundManager 2 provides reliable cross-platform audio under a single JavaScript API.
jQuery Mobile : jQuery Mobile is a HTML5-based user interface system designed to make responsive web sites and apps that are accessible on all smartphone, tablet and ...
Styletron : Styletron is a universal CSS-in-JS engine built from the ground up for high-performance.
Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.