411 REFERENCE · Wikibooks
Evolution of Operating Systems Designs/Historiography
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
CP derivatives
CP
CP-VM
CP/M
CP/M-86
DOS
DRDOS
FreeDOS
Microsoft Windows
Windows 3.x
Windows 95/98/Me
See NT-based versions below
MULTICS derivatives
UNIX
Unix V5 (SCO Unix)
Modern Unix (Solaris / BSD)
FreeBSD
OpenBSD
Xenix
Linux
Plan 9
Inferno
QNX
VSTa
Mac OSX
MIPS RISC/os
RISC iX
VMS derivatives
VMS
OpenVMS
OS/2
eComStation
Microsoft Windows NT-based
Windows NT
Windows 2000
Windows XP
Windows Vista
Windows 7
Windows 8 (and 8.1)
Windows 10
ReactOS (clone of Windows NT-based, not from Microsoft)
MacOS derivatives
Mac OS
Mac OS 9
Cambridge CAP Computer derivatives
KeyKOS
EROS
Coyotos
CapROS
IBSYS derivatives
OS/360
OS/400
AmigaOS derivatives
AmigaOS
AROS
AmigaOS 4.x
MorphOS
Misc. operating systems
Grasshopper
ITS
BeOS
RISC OS