Nanobar
Very lightweight progress bars. No jQuery
Galen
Layout and functional testing framework for websites
Curtainsjs
curtains.js is a lightweight vanilla WebGL javascript library that turns HTML elements into interactive textured planes.
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.
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.
Readmore.js
A lightweight jQuery plugin for collapsing and expanding long blocks of text with "Read more" and "Close" links.
Reseter.css
Reseter.css - A Futuristic Alternative To Normalize.css And CSS Resets
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
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
Superpowers Core
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
Meny
A three dimensional and space effecient menu
Almond
A minimal AMD API implementation for use after optimized builds
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.
Glfx.js
An image effects library for JavaScript using WebGL
Pizzicato
Library to simplify the way you create and manipulate sounds with the Web Audio API.