Processing.js
A port of the Processing visualization language to JavaScript.
Imagesloaded
JavaScript is all like "You images done yet or what?"
Stampit
Create objects from reusable, composable behaviors.
Modernizr
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
Machina.js
js ex machina - finite state machines in JavaScript
Javascript State Machine
A finite state machine javascript micro framework
Inkline
Inkline is the customizable Vue.js UI/UX Library designed for creating flawless responsive websites.
Forerunner Db
A JavaScript database with mongo-like query language, data-binding support, runs in the browser as a client-side DB or on the server via Node.js!
C3
A D3-based reusable chart library
Backbone localStorage
A localStorage adapter for Backbone.js
Angular.js
AngularJS lets you write client-side web applications as if you had a smarter browser. It lets use good old HTML (or HAML, Jade and friends!) as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly
Angular Strap
AngularJS 1.2+ native directives for Bootstrap 3.
Ethvtx
🌀Ethereum-Ready & Framework-Agnostic Redux Store Configuration
Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Out Front Js
Console for mobile browsers and webviews.
W2ui
JavaScript UI library for data-driven web applications
Starability
Accessible rating forms with cute animations on top.