| Short name | Description | Year | Manufacturer | Runnable | Parent |
|---|---|---|---|---|---|
| rm380z | RM-380Z, COS 4.0B/M | 1978 | Research Machines | Yes | |
| rm380z34d | RM-380Z, COS 3.4D/F | 1978 | Research Machines | Yes | rm380z |
| rm380z34e | RM-380Z, COS 3.4E/M | 1978 | Research Machines | Yes | rm380z |
| rm380zf | RM-380Z, COS 4.0B/F | 1978 | Research Machines | Yes | |
| rm380zfhrg | RM-380Z, COS 4.0B/F with HRG | 1978 | Research Machines | Yes | rm380zf |
| rm380zhrg | RM-380Z, COS 4.0B/M with HRG | 1978 | Research Machines | Yes | rm380z |