Processing.js
A port of the Processing visualization language to JavaScript.
Prefixfree
Break free from CSS prefix hell!
PubNub
PubNub makes Real-time Real Easy with a Simple Communications API. Two Functions: Send/Receive (Publish/Subscribe). We provide a web-service API for businesses to build scalable Data Push communication apps on Mobile, Tablet and Web. Bidirectional JSON.
q Tip2
qTip2 - Pretty powerful tooltips
Qunit
An easy-to-use JavaScript Unit Testing framework.
Remote Storage
Client-side Javascript library to make apps compatible with a remote storage.
RequireJS
A file and module loader for JavaScript
Select2
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
ICanHaz.js
A clean solution for templating with Mustache.js and jQuery or Zepto
Javascript State Machine
A finite state machine javascript micro framework
Humane.js
A simple, modern, browser notification system
HTML5shiv
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
Hogan.js
A compiler for the Mustache templating language
Hinclude
declarative client-side inclusion for the Web
Highlight.js
Javascript syntax highlighter
Three.js
JavaScript 3D library.
Treesaver
JavaScript library for creating column and page-based layouts