Digital Research was bought by Novell, and DR DOS became Novell DOS 7; later, it was part of Caldera (under the names OpenDOS and DR-DOS 7.02/7.03), Lineo, and DeviceLogics.
* DR-DOS (Novell DOS, Caldera DR-DOS, OpenDOS) — выпущена Digital Research в 1991 году, перекуплена компанией Novell в 1993 году, затем компанией Caldera.