IOS — operating system
| Operating system | Developer | First release | License |
|---|---|---|---|
| IOS 15 | Apple Inc. | — | — |
| IPadOS 18 | Apple Inc. | — | — |
| ITsART | — | — | — |
| MacOS Big Sur | Apple Inc. | 2020 | proprietary license, Apple Public Source License |
| MacOS Monterey | Apple Inc. | 2021 | proprietary license, Apple Public Source License |