Imagesloaded
JavaScript is all like "You images done yet or what?"
Crypto Js
JavaScript library of crypto standards.
Cellx
Ultra-fast implementation of reactivity for javascript
Functional Js
A functional js library that facilitates currying and point-free / tacit programming
Postal.js
JavaScript pub/sub library supporting some advanced subscription features, plus message capture and replay
Simulacra
One-way data binding for web applications.
Componentjs
ComponentJS -- Powerful run-time Component System for structuring HTML5-based Rich Clients
JavascriptMVC
Develop with direction! With CanJS, jQuery++, FuncUnit, Steal, DocumentJS.
Oraclejet
Oracle JET is a modular JavaScript Extension Toolkit for developers working on client-side applications.
Loglevel
Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods
Keymaster
A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
Google Closure Library
git-svn mirror of Google's Closure Library.
Scale App
scaleApp is a JavaScript framework for scalable One-Page-Applications
Backbone Deep Model
Improved support for models with nested attributes.
Modules Webmake
Bundle CommonJS/Node.js modules for web browser
Stapes
a (really) tiny Javascript MVC microframework
Jailed
Jailed - execute untrusted code with custom permissions