DOS Timelines
| Over the past two decades, Microsoft products have evolved from a single, one-size-fits-all desktop operating system into a diverse family of operating systems and mobile technologies. Today, they help people worldwide achieve their potential at work, home, and just about anyplace in between. |
| Operating System Timelines | |
| Disk Operating Systems (DOS) | |
| 1981: | MS-DOS 1.0 (86-DOS) |
| 1982: | MS-DOS 1.25 |
| 1983: | MS-DOS 2.0 |
| 1983: | MS-DOS 2.01 |
| 1983: | MS-DOS 2.11 |
| 1984: | MS-DOS 2.25 |
| 1984: | MS-DOS 3.0 |
| 1984: | MS-DOS 3.1 |
| 1986: | MS-DOS 3.2 |
| 1987: | MS-DOS 3.21 |
| 1987: | MS-DOS 3.3 |
| 1988: | MS-DOS 3.3Plus |
| 1988: | MS-DOS 3.3T |
| 1988: | MS-DOS 3.31 |
| 1988: | MS-DOS 4.0 |
| 1988: | MS-DOS 4.01 |
| 1989: | MS-DOS 4.01a |
| 1991: | MS-DOS 5.0 |
| 1991: | MS-DOS 5.Oa |
| 1993: | MS-DOS 6.0 |
| 1993: | MS-DOS 6.2 |
| 1994: | MS-DOS 6.21 |
| 1994: | MS-DOS 6.22 |
| Windows Desktop Operating Systems | |
| 1985: | Windows 1.0 |
| 1987: | Windows 2.0 |
| 1990: | Win 3.0 |
| 1993: | Windows for Workgroups 3.11 |
| 1993: | Windows® NT 3.1 |
| 1993: | Win NT Workstation 3.5 |
| 1995: | Win95 |
| 1996: | Win NT Workstation 4.0 |
| 1998: | Win98 |
| 1999: | Win 98 Second Edition |
| 2000: | Windows® Millennium Edition (WinMe) |
| 2000: | Windows 2000 Professional |
| 2001: | Win XP |
| 2001: | Windows® XP Professional |
| 2001: | Win XP Home Edition |
| Windows® Server Operating Systems | |
| 1993: | Win NT Advanced Server 3.1 |
| 1994: | Windows® NT Servers 3.5 |
| 1995: | Win NT Server 3.51 |
| 1996: | Windows® NT Servers 4.0 |
| 1997: | Win NT Server 4.0, Enterprise Edition |
| 1998: | Windows® NT Servers 4.0, Terminal Servers Edition |
| 2000: | Win 2000 Server Family |
| 2002: | Windows® .NET Server |
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