== System ==
=== Disc operating systems ===
* [[400K/S]] ([[SD Microsystems]])
* [[AmsDOS]] ([[Amstrad]])
* [[MS800]] ([[Microstyle]])
* [[ParaDOS]] ([[Quantum Computing]])
* [[RODOS]] ([[Romantic Robot]])
* [[ROMDOS]] and [[RAMDOS]] ([[KDS]]/[[Siren Software]])
* [[S-DOS]] ([[STS]])
=== Graphical user interfaces / Shells ===
* [[SymbOS]] ([[Prodatron]] / [[SymbiosiS]])
=== Filesystem Utilities ===
* [[Cataclysme]] ([[GPA]])