SproutCore – Open-Source HTML5 Application Framework

SproutCore is an HTML5 application framework which lets you simply create desktop-level applications for modern web browsers. SproutCore applications are full-fledged programs, written in JavaScript. That JavaScript executes in your user’s browser, freeing up your servers (and server engineers) to focus on what’s most important in a cloud application: delivering users’ data as quickly and reliably as possible.