Scriptable Headless WebKit
A modern, HTML5-ready alternative to CSS resets (as used by Twitter Bootstrap, HTML5 Boilerplate, TweetDeck, Soundcloud, and many others).
Bluebird is a full featured promise library with unmatched performance.
Phaser is a light-weight 2D game framework for making HTML5 games for desktop and mobile browsers
Simple, scalable state management.
Handsontable is a minimalistic approach to Excel-like table editor in HTML & jQuery
fullPage plugin by Alvaro Trigo. Create full screen pages fast and simple
A datepicker for @twitter bootstrap forked from Stefan Petre's (of eyecon.ro), improvements by @eternicode