Absurd
Writing your CSS in JavaScript. That's it!
Roughdraft.js
Quickly create an interactive HTML mock-up by auto sourcing lorem ipsum/images generators, with minimal html markup, and no server side code
jQuery
jQuery JavaScript Library
Wysiwyg Editor
A flat designed jQuery WYSIWYG text editor based on HTML5, free only for non-commercial projects. For commercial applications you have to purchase a license from
Timeline JS
TimelineJS: A Storytelling Timeline built in JavaScript.
Textillate
A simple plugin for CSS3 text animations
Signal R
Incredibly simple real-time web for .NET
Rando.js
The world's easiest, most powerful random function.
Punycode.js
A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.
Nano Scroller
A jQuery plugin that offers a simplistic way of implementing Lion OS scrollbars.
Intern
A next-generation code testing stack for JavaScript.
HTML5shiv
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
Fuse
Lightweight fuzzy-search, in JavaScript
Anypixel
AnyPixel.js is an open-source software and hardware library that makes it possible to use the web to create big, unusual, interactive displays.
Engaged
Animated Social Menu Framework with magic
Venus.js
where bugs go to die
Superpowers Core
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects