| Operating system | Developer | First release | License |
|---|---|---|---|
| BOS/360 | IBM | — | proprietary license |
| CP/CMS | Cambridge Scientific Center | — | — |
| DOS/360 | IBM | 1966 | — |
| IBM Airline Control Program | IBM | 1968 | — |
| IBM Basic Programming Support | IBM | — | — |
| IBM CP-40 | Cambridge Scientific Center | — | — |
| Michigan Terminal System | University of Michigan | 1967 | — |
| MUSIC/SP | McGill University | 1972 | — |
| OS/360 | IBM | 1966 | proprietary license |
| TSS/360 | IBM | 1967 | — |
| VM | IBM | — | — |