Scalable-js-architecture-app is a project mainly written in JavaScript, it's free.
basic application utilizing the scalable javascript architecture design described by Nicholas Zakas at yahoo
This is a basic js application project built based off of Nicholas Zakas' scalable javascript architecture design talk:
http://developer.yahoo.com/yui/theater/video.php?v=zakas-architectureit uses jQuery as the main base library, and YUI 3 for unit testing.