2.5 Modern UI
A popular user interface for NSIS is the Modern User Interface. It has an interface like the wizards of recent Windows versions. The Modern UI is not only a customized resource file, it has a lots of new interface elements. It features a white header to describe the current step, a description area on the component page, a welcome page, a finish page that allows the user to run the application or reboot the system and more.
For more information, see the Modern UI 2 Readme and the Modern UI Examples.