Assemble
Static site generator for Node.js, Grunt.js, and Yeoman (and soon, Gulp), using the Handlebars template engine. Used by Zurb Foundation, Zurb Ink, H5BP/Effeckt, Less.js / lesscss.org, Topcoat, Web Experience Toolkit, and hundreds of other projects to build sites, themes, components, documentation, blogs and gh-pages. Pull requests welcome, stars appreciated!
Tinycon
A small library for manipulating the favicon, in particular adding alert bubbles and changing images.
Cylon
JavaScript framework for robotics, drones, and the Internet of Things (IoT)
Stellar.js
Stellar.js - Parallax scrolling made easy
Tonal
A functional music theory library for Javascript
Keypress
A keyboard input capturing utility in which any key can be a modifier key.
Basket.js
A script and resource loader for caching & loading files with localStorage
LZ String
LZ-based compression algorithm for JavaScript
Tribute
ES6 Native @mentions
jQuery Migrate
APIs and features removed from jQuery core
Parallel.js
Parallel.js is a tiny library for multi-core processing in Javascript.
Xdomain
A pure JavaScript CORS alternative
Psd.js
A Photoshop PSD file parser for NodeJS and browsers
LeapJS
Javascript library for the Leap motion controller
Medium Editor Insert Plugin
jQuery insert plugin for MediumEditor (Medium.com WYSIWYG editor clone)
Engine
GSS engine
Emojify.js
A Javascript module to convert Emoji keywords to images