Dynamo.js
Creates dynamic bits of HTML to add some zest to your content
Supermodel
Supermodel - Minimal Model Tracking for Backbonejs
Store.js
localStorage wrapper for all browsers without using cookies or flash. Uses localStorage, globalStorage, and userData behavior under the hood
Zest
An absurdly fast CSS selector engine.
Code Mirror
In-browser code editor
Jasmine Ajax
jasmine-ajax - A library for faking Ajax responses in your Jasmine suite.
Bootstrap Ajax
A library for adding declarative ajax functionality to your website
Howler.js
Javascript audio library for the modern web.
Pickadate.js
lightweight jquery date selector with multi-language support
Fastclick
Polyfill to remove click delays on browsers with touch UIs
Boomerang
End user oriented web performance testing and beaconing
Zen Form
Add distraction mode for forms
Jsviews
Interactive data-driven views, built on top of JsRender templates
Springy
A force directed graph layout algorithm in JavaScript
Canjs
Can do JS, better, faster, easier.
Jsface
Small, fast, elegant, powerful, and cross platform JavaScript OOP library. Support main(), singleton, super call, private, mixins, plugins, AOP and more.
Math Box.js
MathBox is a (work in progress) library for making presentation-quality math diagrams in WebGL.