Jasmine Ajax
jasmine-ajax - A library for faking Ajax responses in your Jasmine suite.
Hammer.js
A javascript library for multi-touch gestures // You can touch this
Gitgraph.js
A JavaScript library to draw pretty git graphs in the browser
Favico.js
Make a use of your favicon with badges, images or videos
Browser Sync
Keep multiple browsers & devices in sync when building websites. http://browsersync.io
Boomerang
End user oriented web performance testing and beaconing
Aja.js
Ajax without XML : Asynchronous JavaScript and JavaScript/JSON(P)
Jquery.payment
A general purpose library for building credit card forms, validating inputs and formatting numbers.
Processing.js
A port of the Processing visualization language to JavaScript.
Imagesloaded
JavaScript is all like "You images done yet or what?"
jQuery Steps
A powerful jQuery wizard plugin that supports accessibility and HTML5.
Webshim
Webshims Lib is a modular capability-based polyfill-loading library
Stampit
Create objects from reusable, composable behaviors.
Rickshaw
JavaScript toolkit for creating interactive real-time graphs
Rest
RESTful HTTP client for JavaScript
Particles.js
A lightweight JavaScript library for creating particles
Modernizr
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.