Gives a dialogue box allowing you to return to the Finder when the computer freezes due to a software error. Especially useful when testing new and question able software. Runs on System 7. Definitely worth it. Allows you to activate radio buttons by hitting control and the first letter of the option instead of using the mouse.
Key options are configurable.
This is much more useful than it may seem. And it's freeware. Click on the title bar to 'roll up' the window so that only the title bar shows. If you have a small monitor, this is essential. Highly configurable clock and alarm, and freeware as well.