| Type | operating system |
|---|---|
| Developer | Apple Inc. |
| Predecessor | System 3 |
| Successor | System Software 5 |
Sources: Wikidata (CC0) · Wikidata Q9350447
Operating systems · 1
| Operating system | Developer | First release | License |
|---|---|---|---|
| System 3 | Apple Inc. | — | — |
Operating systems · 1
| Operating system | Developer | First release | License |
|---|---|---|---|
| System Software 5 | — | — | — |