Sproutcore - JavaScript Application Framework

SproutCore is a framework for building blazing-fast, desktop-like applications in the web browser using only native HTML5 features. With SproutCore, you can build rich, interactive applications in the web in less code than most simple web pages require today. SproutCore applications move business logic to the browser so they can respond to your users' taps and clicks immediately, avoiding an agonizing roundtrip across often intermittent network connections.