Curtainsjs
curtains.js is a lightweight vanilla WebGL javascript library that turns HTML elements into interactive textured planes.
Machina.js
js ex machina - finite state machines in JavaScript
Nanobar
Very lightweight progress bars. No jQuery
Galen
Layout and functional testing framework for websites
Readmore.js
A lightweight jQuery plugin for collapsing and expanding long blocks of text with "Read more" and "Close" links.
Galleria
Galleria is a JavaScript image gallery framework. The aim is to simplify the process of creating professional image galleries for the web and mobile devices.
jQuery.mb.yt Player
use a custom youtube player for a video as background on jQuery framework
Multiscroll.js
multiscroll plugin by Alvaro Trigo. Create full screen pages with two scrolling sections per page.
Superpowers Core
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
Montage
Core framework: Montage simplifies the development of rich HTML5 applications by providing modular components, real-time two-way data binding, CommonJS dependency management, and many more conveniences. Join us on irc.freenode.net#montage or https://groups.google.com/d/forum/montagejs
Glfx.js
An image effects library for JavaScript using WebGL
Meny
A three dimensional and space effecient menu
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
Almond
A minimal AMD API implementation for use after optimized builds
Pizzicato
Library to simplify the way you create and manipulate sounds with the Web Audio API.
Fortune
A library for managing structured data in Node.js and web browsers.
Simplecart
A simple javascript shopping cart that easily integrates with your current website.