My mind is going:
What was the name of the app/doc switcher one could use in place of the Finder in the OS 7 days. I believe it was most popular on the Performa machines. It had the big clickable buttons.
To do anything serious, you had to logout of it and go back to the Finder.
(The Windows 8 Metro desktop interface reminded me of it.)
Easy Access is coming to mind, but I thought that was a control panel for translating PC files. Again, my mind is going