Xerox 8010 Star, Source: toastytech.com Apple Lisa Office System 1 (released in 1983) Also referred to as Lisa OS, which in this case is short for Office System. Apple Lisa OS 1, Source: GUIdebook Apple Lisa OS 1, Source: GUIdebook VisiCorp Visi On (released in 1984) Visi On was the first desktop GUI developed for the IBM PC. VisiCoprt Visi On, Source: toastytech.com VisiCoprt Visi On, Source: toastytech.com Mac OS System 1.0 (released in 1984) System 1.0 was the first operating system GUI developed for the Macintosh. Apple Mac System 1.0, Source: toastytech.com Amiga Workbench 1.0 (released in 1985) When first released, Amiga was ahead of its time. Amiga Workbench 1.0, Source: GUIdebook Amiga Workbench 1.0, Source: GUIdebook Windows 1.0x (released in 1985) In this year Microsoft finally caught up with the whole graphical user interface craze and released Windows 1.0, its first GUI based operating system (although no one would dare to refer to it as one). Microsoft Windows 1.01, Source: makowski-berlin.de Microsoft Windows 1.01, Source: makowski-berlin.de GEM (released in 1985) GEM (Graphical Environment Manager) was a windowing style GUI created by Digital Research, Inc. Source: Wikipedia 1986 - 1990 IRIX 3 (released in 1986, first release 1984) The 64-bit IRIX operating system was created for UNIX. Source: Wikipedia Windows 2.0x (released in 1987) In this version, the actual management of the windows had significantly improved. Microsoft Windows 2.03, Source: guidebookgallery.org Microsoft Windows 2.03, Source: guidebookgallery.org OS/2 1.x (released in 1988) OS/2 was originally co-developed by IBM and Microsoft, but in 1991 the two companies split up, with Microsoft incorporating the technology in its own Windows GUI and IBM developing OS/2 further. OS/2 1.2, Source pages.prodigy.net Windows 3.0 (released in 1990) By this version, Microsoft had realized the real potential in GUI's and started to significantly improve them. Microsoft Windows 3.0, Source: toastytech.com Microsoft Windows 3.0, Source: toastytech.com 1991 - 1995 Amiga Workbench 2.04 (released in 1991) Many improvements were made to this version of the GUI. Apple Mac OS System 7.0, Source: guidebookgallery.org Apple Mac OS System 7.0, Source: guidebookgallery.org Windows 3.1 (released in 1992) This version of Windows included TrueType fonts which were pre-installed. Source: Wikipedia OS/2 2.0 (released in 1992) This was the first GUI that was subjected to international acceptance, usability and accessibility testing. IBM OS/2 2.0, Source: toastytech.com IBM OS/2 2.0, Source: toastytech.com Windows 95 (released in 1995) The user interface was completely re-designed since version 3.x. Microsoft Windows 95, Source: guidebookgallery.org Microsoft Windows 95, Source: guidebookgallery.org 1996 - 2000 OS/2 Warp 4 (released in 1996) IBM released OS/2 Warp 4 which brought a significant facelift to the workspace. IBM OS/2 Warp 4, Source: toastytech.com IBM OS/2 Warp 4, Source: toastytech.com Mac OS System 8 (released in 1997) 256 color icons were the default in this version of the GUI. Apple Mac OS 8, Source: guidebookgallery.org Windows 98 (released in 1998) The icon styles were almost the same as in Windows 95, but the whole GUI could use more than 256 colors for rendering. Microsoft Windows 98, Source: toastytech.com KDE 1.0 (released in 1998) This is how the KDE team described the project upon releasing version 1.0: "KDE is a network transparent, contemporary desktop environment for UNIX workstations. A completely free and open computing platform available to anyone free of charge including its source code for anyone to modify." Source: Wikipedia BeOs 4.5 (released in 1999) The BeOS operating system was developed for personal computers. Red Hat Linux GNOME 1.0.39, Source: visionfutur.com 2001 - 2005 Mac OS X (released in 2001) In early 2000 Apple announced their new Aqua interface and in 2001 the company released it with their brand new operating system called Mac OS X. Apple Mac OS X 10.1 Source: guidebookgallery.org Windows XP (released in 2001) As Microsoft t

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