TraceKit : Not all browsers support stack traces on error objects, but TraceKit squeezes out as much useful information as possible and normalizes it.
Autotrack : Automatic and enhanced Google Analytics tracking for common user interactions on the web.
JavascriptOO : Every javascript project you should be looking into.
With examples, categories, install commands, CDN links, project and author stats, and more.
Ember.js : A JavaScript framework for creating ambitious web applications
Head JS : Load scripts like images. Use HTML5 and CSS3 safely. Target CSS for different screens, paths, states and browsers. Make it the only script in your HEA...
A library to generate PDFs in client-side JavaScript.