| Operating system | Developer | First release | License |
|---|---|---|---|
| MS-DOS | Microsoft | 1981 | MIT License, proprietary license |
| Venix | IntervalZero | 1983 | — |
| Windows 10 Home | Microsoft | — | — |
| ZDOS | — | — | — |
| Operating system | Developer | First release | License |
|---|---|---|---|
| MS-DOS | Microsoft | 1981 | MIT License, proprietary license |
| Venix | IntervalZero | 1983 | — |
| Windows 10 Home | Microsoft | — | — |
| ZDOS | — | — | — |