I don't think Apple ever used bad packaging.Leopard. Not because of it's fantastic capabilities as it didn't have any, but because it was the first time Apple put a retail fancy box on computer store shelves, heralding the start of where we are now!
I don't really have a favorite, but agree that Windows ought to be included as well.
I like OS X, Windows 7 and iOS - if I were to pick anything that is.
Well if Windows is included too I'd have to say XP. I guess if we're talking about groundbreaking then WIn95 / 98 would be in there too, but fort stability and pro tools XP was the one for me.
Back in the day OS/2 Warp was well ahead with their GUI, though the horsepower of the computers lacked the ability to drive their incredibly object orientated GUI, or it may been bloated code - either way it was superior to windows 3.1. Lack of apps and other factors doomed the OS
Good memories on that one; had it running on a 386SX. Too bad IBM didn't pushed harder.
Oh, and I loved GEMTOS on my Atari ST.
For me its legacy windows (3.1/95/xp), win7 and now win8 <- that because its such a radical change.
Win 8.0 was a major change due to the metro interface replacing the start start button and task bar. With 8.1 you can choose to use the traditional start menu and task bar or the metro interface. The metro interface is good for touch based products, not so much for desktops imo.Is Win 8 really a huge change?
What about Xerox Star. The GUI that started it all!
The Xerox Star came after the Xerox Alto. I used an Alto. Frankly it wasn't that great.
I saw the Star I think. What was afar the Star?
I remember some very cool 3d file system browser. Maybe that was at HP...