An HTML5 Mobile App. Framework – Jo
Jo is an open source mobile application framework that is based on HTML5 .
It enables you to create for multiple platforms like webOS, iOS, Android, Symbian, Safari, Chrome and Dashboard Widgets.
The framework is small in size, ~8kb, without any dependencies and compatible with many other JS frameworks.
Jo is also compatible with PhoneGap and makes possible to create native apps besides web apps.
It is very well-documented and has sample codes on every level.