||[[ParaDOS|ParaDOS]]||1997||[[Executioner|Executioner]]||||1||7 or Lower|| [http://www.winape.net/download/Parados.zip ParaDOS 1.1]
|-
||[[RDOS|RDOS]]||1988||[[Dobbertin|Dobbertin]]||Smaller than any other installed Not a DOS, it provides a 444 KB RAM disc||1||7|| [[Media:RDOS-EXT.ROM|RDOS ROM]]
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||[[RODOS|RoDOS v2.11]]||19xx||[[Romantic_Robot|Romantic Robot]]||||1||7|| [[Media:RODOS211.zip|RODOS 2.11 ROM]]