* [[BOS|BOS v2.1]] (1987)([[Vortex_Computersysteme|Vortex Gmbh]])
* [[D-DOS|D-DOS]] (1987) ([[Dobbertin|Dobbertin]])
* [[Maxidos|Jm MaxiDOS v1.2]] (19xx)([[Nemesis|Nemesis]])
* [[ParaDOS|ParaDOS]] ([[Executioner|Executioner]])
* [[RDOS|RDOS]] (1988) ([[Dobbertin|Dobbertin]])
* [[RODOS|RoDOS v2.11]] (19xx)(Romantic Robot)
* [[ROMDOS|Rom DOS XL v4.88]] (1993)([[Siren_Software|Siren Software Ltd]])
* [[VDOS|VDOS]] ([[Vortex|Vortex]])Ver. 1.0 * [[VDOS|VDOS]] ([[Vortex|Vortex]]) Ver. 2.0 and 2.1
* [[XD-DOS|XD-DOS]] (1987) ([[Dobbertin|Dobbertin]])
=== Alternative OS ROMs ===