This represents maybe 1/100th of the timeline of the evolution of GUI's for desktop PC's. This person obviously never used anything more powerful than a Dell.
Some of the GUI's off the top of my head that were SIGNIFICANT advances during the 80s and 90s include:
* Tandy Deskmate (once the #1 computer seller in America)
* Apple IIgs interface (precursor to the Macintosh)
* Xerox
* OS/2
* Amiga
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Some of the GUI's off the top of my head that were SIGNIFICANT advances during the 80s and 90s include:
* Tandy Deskmate (once the #1 computer seller in America)
* Apple IIgs interface (precursor to the Macintosh)
* Xerox
* OS/2
* Amiga