Jasmine Ajax
jasmine-ajax - A library for faking Ajax responses in your Jasmine suite.
FancyBox
FancyBox is a tool that offers a nice and elegant way to add zooming functionality for images, html content and multi-media on your webpages.
Boron
A collection of dialog animations with React.js
Winjs
WinJS project by Microsoft Open Technologies
Dropzone
Dropzone is an easy to use drag'n'drop library. It supports image previews and shows nice progress bars.
Js Cover
JSCover is a tool that measures code coverage for JavaScript programs.
jQuery Lazyload
jQuery plugin for lazy loading images
Uranium
Universal css-in-js media queries for React Native and React
Ripple
A tiny foundation for building reactive views
Matter JS
a 2D rigid body physics engine for the web
Fine Uploader
Multiple file upload plugin with progress-bar, drag-and-drop.
Chaplin
An Application Architecture Using Backbone.js
Clusterize.js
Tiny vanilla JS plugin to display large data sets easily
jQuery Pjax
pushState + ajax = pjax
Yarn
Fast, reliable, and secure dependency management.
Togetherjs
A service for your website that makes it surprisingly easy to collaborate in real-time.
Superagent
Ajax with less suck - (and node.js HTTP client to match)