One of Mac OS X's best features within the Finder has been re-implemented for classic Mac OS. Exposé has been built by the user Crutch from 68kMLA.

Exposé for classic Mac OS originated from the 68kMLA user PB170 as a development request, which has now become a fully functional Finder utility. Exposé can be triggered by a key combination or by using hot corners.

As of writing this article Exposé is still in development, there has been a lot of testing but some bugs may be present. Check out the 68kMLA thread and send a thank you to Crutch for their hard work!

Source & Development Thread