Passport : Passport is authentication middleware for Node.js. Extremely flexible and modular, Passport can be unobtrusively dropped in to any Express-based web a...
jquip : Smaller, Lighter, Faster, more modular jQuery - include only the parts you want! Don't use it, Don't include it.
Mousetrap : A simple library for handling keyboard shortcuts in Javascript.
Ember.js : A JavaScript framework for creating ambitious web applications
Zepto.js : Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API. If you use jQuery, you already know how to use Zept...
A super micro tiny DOM library for authoring HTML5 mobile web applications.