A lightweight, pure JavaScript library for responding to CSS media queries.
A system for coordinating the activities of users via their mobile phones.
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 Zepto.
Tips, Resources and Patterns for Responsive Web Design
JavaScript Game Engine, HTML5 Game Engine
RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino and Node.
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
StyleDocco generates documentation and style guide documents from your stylesheets.
Tool for finding memory leaks in JavaScript programs.
Animate.css is a bunch of cool, fun, and cross-browser animations for you to use in your projects.
A simple library for handling keyboard shortcuts in Javascript.
Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.
An article on the best practices to apply in order to minimize HTTP round-trip times