* [[VDOS]] ([[Vortex Computersysteme|Vortex]])
* [[X-DDOS]]
== IDE operating systems ==
* [http://www.cpcwiki.eu/forum/applications/cubeios-fat16fat32-rom-for-the-cpc's-with-xmass CubeIOS / FAT16+FAT32-IDE-OS ROM for the Amstrad CPC's with XMASS]
== Graphical user interfaces / Shells ==