Jo is HTML5 Javascript Framework for Mobile Applications.

• A Pretty UI Widget Framework With a side of DOM, event and data stuff
• Open Source Under a friendly OpenBSD License
• Cross Platform webOS, iOS, Android, Symbian, Safari, Chrome, Dashboard Widgets (wait, what?)
• Light and Efficient Minified JavaScript is just over 8K with no dependancies
• Compatible with PhoneGap Plus most other JavaScript frameworks