Changes
/* Discontinued Operating Systems */
| ❌
| Freeware
| -
|-
| Acorn RISC OS
| ❌
| Open source
| -
|-
| AmigaOS m68k
| ✅
| Open source
| -
|-
| AmigaOS m68k
| ❌
| Open source
| -
|-
| AmigaOS m68k
| ❌
| Open source
| -
|-
| AmigaOS m68k
| ❌
| Open source
| -
|-
| BlackBerry OS
| ❌
| Commercial💲
| -
|-
| Classic Mac OS
| ❌
| Shareware💲
| -
|-
| DOS
| ❌
| Freeware
| -
|-
| DOS
| ❌
| Open source
| -
|-
| DOS
| ❌
| Freeware
| -
|-
| DOS
| ❌
| Freeware
| -
|-
| DOS
| ❌
| Open source
| -
|-
| DOS
| ✅
| Freeware
| -
|-
| DOS
| ❌
| Open source
| -
|-
| DOS
| ❌
| Freeware
| -
|-
| DOS
| ❌
| Commercial💲
| -
|-
| DOS
| ❌
| Freeware
| -
|-
| EXOS
| ❌
| Open source
| -
|-
| Maemo
| ❌
| Open source
| -
|-
| MSX-DOS
| ❌
| Freeware
| -
|-
| Palm OS
| ❌
| Open source
| -
|-
| Palm OS
| ❌
| Freeware
| -
|-
| Pocket PC
| ❌
| Freeware
| -
|-
| SunOS
| ❌
| Shareware💲
| -
|-
| Symbian
| ❌
| Open source
| -
|-
| Windows 9x
| ❌
| Open source
| -
|-
| Windows 9x
| ❌
| Unreleased?
| -
|}
