HTML5 <audio> or <video> player with Flash and Silverlight shims that mimics the HTML5 MediaElement API, enabling a consistent UI in all browsers.
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.
Pushy is a responsive off-canvas navigation menu using CSS transforms & transitions
multiscroll plugin by Alvaro Trigo. Create full screen pages with two scrolling sections per page.
Mouse position monitoring and user input prediction
An easy-to-read, HTML-based, mostly logic-less DOM templating engine with support for both server-side and client-side templating.
noty - jquery notification plugin
Kendo UI Core
CSS unit testing
Custom Elements-Based HTML5 UI Framework for Building Your Mobile Front End