iWebKit is a file package designed to help you create your own iPhone, iPod Touch and iPad compatible website or webapp.
iWebKit has been specially made for Apple mobile devices. Specific iphone css and html rules compatible with safari’s engine called “webkit” are used. Most browsers won’t be able to open an iWebKit site correctly, currently only chrome and safari do on a desktop PC ( http://demo.iwebkit.net).
iUI and jQTouch are frameworks that include all the css, javascript and images needed to build native looking apps.
jQTouch is a jQuery library, it’s functionality is currently comparable to jQuery UI.