peterme.com has a link that’s too good to pass up, to a history of the GUI. I’d never seen shots of Windows 1.0 and 2.0 before. Man, are they bad. Compare the screen shots of the first color version of the Mac OS to Windows 2.03 from 1987. How did Apple ever blow that lead? Sad, really. Also, this page is missing some of the Sun GUIs, like NeWS and Openlook. There are a lot of other older systems that don’t appear on it as well.