Changes
/* Discontinued Operating Systems */
! Current version
! Latest release
! License
! Emulated systems
|-
| Acorn RISC OS
|
| Jul 28, 1996
| Freeware
| [[CPC old generation|CPC range]]
|-
| Acorn RISC OS
| 1.21
| Mar 22, 2016
| Open source
| [[CPC old generation|CPC range]]
|-
| AmigaOS m68k
| 2.0
| Apr, 2002
| Open source
| [[CPC old generation|CPC range]], [[Plus|Plus range]]
|-
| AmigaOS m68k
| 0.46
| Jan 21, 1998
| Open source
| [[CPC old generation|CPC range]]
|-
| AmigaOS m68k
|
| Feb 24, 1995
| Open source
| [[CPC old generation|CPC range]]
|-
| AmigaOS m68k
| 0.7
| Sep 15, 1996
| Open source
| [[CPC old generation|CPC range]]
|-
| BlackBerry OS
| 1.0.1.3
| Jul 15, 2013
| Commercial💲
| [[CPC old generation|CPC range]]
|-
| Classic Mac OS
| 1.3.2
| Oct 6, 1997
| Shareware💲
| [[CPC old generation|CPC range]]
|-
| DOS
| 3.9
| Sep 8, 2018
| Open source
| [[CPC old generation|CPC range]], [[Plus|Plus range]], [[KC Compact]], [[Aleste 520EX]] & lots of other computer systems
|-
| DOS
| 0.8a
| Apr 15, 2000
| Freeware
| [[CPC old generation|CPC range]]
|-
| DOS
| 0.4
| Jul 7, 2004
| Open source
| [[CPC old generation|CPC range]]
|-
| DOS
| 1.94
| Jun 2, 2011
| Freeware
| [[CPC old generation|CPC range]]
|-
| DOS
| 1.5
| Jul 7, 1998
| Freeware
| [[CPC old generation|CPC range]]
|-
| DOS
| 5.2
| Apr 21, 1997
| Open source
| [[CPC old generation|CPC range]]
|-
| DOS
| 1.8
| Nov 2, 2000
| Freeware
| [[CPC old generation|CPC range]], [[Plus|Plus range]]
|-
| DOS
|
| Feb 3, 1998
| Open source
| [[CPC old generation|CPC range]]
|-
| DOS
|
| Mar 23, 1995
| Freeware
| [[CPC old generation|CPC range]]
|-
| DOS
|
| 1990
| Commercial💲
| [[CPC old generation|CPC range]]
|-
| DOS
| 0.91
| Oct 24, 1998
| Freeware
| [[CPC old generation|CPC range]]
|-
| EXOS
| 1.3
| Jan 11, 2013
| Open source
| [[CPC old generation|CPC range]]
|-
| Maemo
| 1.20-1
| Apr 27, 2010
| Open source
| [[CPC old generation|CPC range]]
|-
| MSX-DOS
|
| Dec 17, 2018
| Freeware
| [[CPC old generation|CPC range]]
|-
| Palm OS
| 2.8
| Jun 28, 2011
| Open source
| [[CPC old generation|CPC range]]
|-
| Palm OS
| 0.75
| Dec 4, 2007
| Freeware
| [[CPC old generation|CPC range]]
|-
| Pocket PC
| 0.9
| Aug 19, 2007
| Freeware
| [[CPC old generation|CPC range]]
|-
| SunOS
| 1.3.0
| Feb 22, 1997
| Shareware💲
| [[CPC old generation|CPC range]]
|-
| Symbian
| 0.74
| Feb 21, 2006
| Open source
| [[CPC old generation|CPC range]]
|-
| Windows 9x
| 0.3
| Jan 22, 2004
| Open source
| [[CPC old generation|CPC range]]
|-
| Windows 9x
| 1.30B
| Jan 11, 2000
| Freeware
| [[CPC old generation|CPC range]], [[Plus|Plus range]], [[ZX Spectrum]], [[ZX80/81]], [[Enterprise]], [[Jupiter ACE]]
|-
| Unreleased?
|
| Nov 12, 2014
| Unreleased?
| [[CPC old generation|CPC range]]
|}
