Responsive Img
Responsive Img is a jQuery plugin that changes an image's src attribute based on its container's width.
Typeit
The most versatile JavaScript typewriter effect library on the planet.
QuoJs
Micro JavaScript library for mobile devices
HTML5shiv
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
Create
Midgard Create, a generic web editing interface for any CMS
Backbone Associations
Create object hierarchies with Backbone models; Respond to hierarchy changes using regular Backbone events.
Animsition
A simple and easy jQuery plugin for CSS animated page transitions.
Yarn
Fast, reliable, and secure dependency management.
Rangeslider.js
HTML5 input range slider element polyfill. —
FullCalendar
Full-sized drag & drop event calendar (jQuery plugin)
jQuery Evergreen
Small & fast DOM and event library for modern browsers.
Vis
Dynamic, browser-based visualization library
Reasondb
A 100% JavaScript object database: SQL like syntax, full-text search, auto object sync, swapable persistence engines, asynchronous cursors, streaming analytics, 18 built-in plus in-line fat arrow predicates, predicate extensibility, indexed computed values, joins, nested matching, statistical sampling and more.
Pdfmake
Client/server side PDF printing in pure JavaScript
Mobiscroll
The customizable HTML5 spinner/scroller control for touch devices like smartphones and tablets
Ladda
Buttons with built-in loading indicators.
Jo
Jo is a thin (~12K) candy shell for PhoneGap apps. It's an HTML5 mobile app framework which provides UI widgets, a flexible event model, a wrapper for sound, and a light data layer. Apps are skinnable with CSS3, and work everywhere PhoneGap does... and then some, including Adobe Air and OSX (desktop and dashboard).