Exit windows allows you to quickly exit windows via an icon in the system tray. You can shutdown/log off/restart all 3 of which will ask you to save any work. You can also force a restart or shutdown in which case you should not be prompted for anything. This immediate shutdown can be assigned to a keboard shortcut or to a click or double click on the icon in the system tray. If assigned to a keyboard hot-key, it can be used at virtually any time during your windows session.

Useful so that you can shutdown or restart your computer immediately at the touch of a button, literally.