Operating Systems

• GNU/Linux
• GNU HURD
• Microware OS-9
• Solaris
• SunOS
• HP-UX
• AIX
• OpenVMS
• Mac OS
• MINIX
• FreeBSD
• NetBSD
• OpenBSD
• DragonFly
• Plan 9
• FreeDOS
• Caldera OpenDOS
• Novell DOS
• DR-DOS
• Microsoft DOS
• PC-DOS
• BeOS
• QNX
• AROS
• OS/2
• AtheOS
• SkyOS
• Syllable
• Visopsys
• ReactOS
• Menuet
• AmigaOS
• AmigaDOS
• IRIX
• SINIX
• BSD/OS
• Ultrix
• TRS-DOS (TRS-80)
• ProDOS (Apple ][e)
• DOS3.3 (Apple ][)
• CP/M (as used prior to the IBM PC - ie KayPro, Osborne)
• Unix
• Multics
• OS/360
• MVS
• RiscOS
• Windows 1.00
• Windows 1.01
• Windows 1.02
• Windows 1.03
• Windows 1.04
• Windows 1.05
• Windows 2.01
• Windows 2.02
• Windows 2.03
• Windows 2.04
• Windows/286 2.1
• Windows/386 2.1
• Windows/486 2.1
• Windows/286 2.11
• Windows/386 2.11
• Windows/486 2.11
• Windows 2.2
• Windows 2.21
• Windows 3.00
• Windows 3.01
• Windows 3.02
• Windows 3.1
• Windows 3.11
• Windows for Workgroups 3.1
• Windows for Workgroups 3.11
• Windows 3.2
• Windows for Workgroups 3.2
• Windows 3.3
• Windows 95
• Windows 96
• Windows 98
• Windows Me
• Windows NT 3.0
• Windows NT 3.1
• Windows NT 3.11
• Windows NT 3.2
• Windows 3.5
• Windows 3.51
• Windows NT 4.0
• Windows NT 4.1
• Windows NT 5.0
• Windows 2000
• Windows Server 2000
• Windows Advanced Server 2000
• Windows Datacenter Server 2000
• Windows XP
• Windows Server 2003
• Windows Small Business Server 2003
• Windows Server 2003 R2
• Windows Vista
• Windows Server 2008
• Windows 7
• Windows Server 2008 R2
• Windows 7.1
• Windows Server 2008 R3
• Windows 8
• Windows Server 2012
• Windows 8.1
• Windows Server 2012 R2
• Windows 10
• Windows Server 2016
• Windows Server 2019
• NeXTStep