Christophe Coenraets has written a simple application, built using jQuery Mobile and PhoneGap. Even though the application is simple, it covers some common requirements of mobile applications: database access through JSON services, multi-level master-detail views, parameter passing between views, etc.

You can play with the application, or download the source code (HTML, JavaScript, CSS, PHP services and SQL script). And you can use PhoneGap to package this application for different mobile platforms.

Requirements: jQuery and PhoneGap
Demo: http://coenraets.org/apps/directory/jqm/index.html
License: License Free