Orbit and Dui are UI Frameworks which provide ways to write finger oriented, highly animated applications. Basically something similar to what iphone, android or palm pre provides. QWidget is not designed for that. They also provide quite a few other things like virtual keyboard, localization, application lifecycle, service framework, notification framework and so on. Perhaps I phrased it wrong in my message. Dui apps are not maemo specific, they are Dui specific. You can take Dui library to your platform (where qt is supported) compile and create nice looking applications.