store.js : localStorage wrapper for all browsers without using cookies or flash. Uses localStorage, globalStorage, and userData behavior under the hood.
emotion : emotion is a high performance, lightweight css-in-js library that supports both string and object based styles.
jsfx : This is a javascript library (with frontend) for sound effect generation.
Prototype : Easy Ajax and DOM manipulation for dynamic web applications
Vex : Vex is a modern dialog library which is highly configurable, easily stylable, and gets out of the way. You'll love vex because it's tiny (6kb minified...
A simple library for handling keyboard shortcuts in Javascript.