| Type | operating system |
|---|---|
| Predecessor | System 4 |
| Successor | System 6 |
Sources: Wikidata (CC0) · Wikidata Q3509118
Operating systems · 1
| Operating system | Developer | First release | License |
|---|---|---|---|
| System 4 | Apple Inc. | — | — |
Operating systems · 1
| Operating system | Developer | First release | License |
|---|---|---|---|
| System 6 | Apple Inc. | — | proprietary license |