jQtouch seems to be more light and more targeted than jQuery mobile. jQtouch is a plugin that optimizes the mobile functionality for a form based application. You can extend it, but it is not as robust as the jQuery mobile framework. Will look into some more.

is presented as a framework

http://web.bogdanteodoru.com/resources/mobile-framework-comparasion/

http://zsprawl.com/iOS/2012/04/comparing-jquery-mobile-vs-jqtouch/