GUI Gallery

GUI Gallery is one of my favorite sites; it's a collection of screenshots from pretty much every GUI-based OS ever released, from GEM to Apple System v1.1 to BeOS to different iterations of Mac OS X.  This site has been around quite a long time, and I've used it many times in teaching Introduction to Computers classes. I'm a firm believer that people brand new to computers need to have a sense of the history of computers and nothing shows the evolution of our computer platforms better than this site.

There's even screenshots of the hilarious and misguided Microsoft Bob. Hours of entertainment, especially if you check out his links to other GUI sites. Enjoy!