Wad
Web Audio DAW. Use the HTML5 Web Audio API for dynamic sound synthesis. It's like jQuery for your ears.
Showdown
JavaScript port of Markdown
Draft Js
A React framework for building text editors.
Bower
A package manager for the web, created at Twitter
Node Decorators
node-decorators
Trace Kit
Attempts to create stack traces for unhandled JavaScript exceptions in all major browsers.
Js Cover
JSCover is a tool that measures code coverage for JavaScript programs.
Aurora
Hate Cookies? Introducing Aurora, 100% Cookie-Free Open Website Analytics. Collect Anonymous Data. Make your Audience Happy Now!
SockJS Client
WebSocket emulation - Javascript client
Nock
HTTP mocking and expectations library
Scroll Magic
The jQuery plugin for magical scroll interactions.
Montage
Core framework: Montage simplifies the development of rich HTML5 applications by providing modular components, real-time two-way data binding, CommonJS dependency management, and many more conveniences. Join us on irc.freenode.net#montage or https://groups.google.com/d/forum/montagejs
Loopback
LoopBack makes it easy to build modern applications that require complex integrations.
Framework7
Full Featured HTML Framework For Building iOS & Android Apps
Favico.js
Make a use of your favicon with badges, images or videos
Cannon.js
A lightweight 3D physics engine written in JavaScript.
Alertify.js
JavaScript Alert/Notification System