Darwin (operating system)
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Darwin is the core Unix operating system of macOS (previously OS X and Mac OS X), iOS, watchOS, tvOS, iPadOS, visionOS, and bridgeOS. It previously existed as an independent open-source operating system, first released by Apple Inc. in 2000. It is composed of code derived from NeXTSTEP, BSD, Mach, and other free software projects' code, as well as code developed by Apple.
| Developer | Apple Inc. |
|---|---|
| Written in | C, C++, Objective-C, assembly language |
| OS family | Unix,[1][2] BSD[3] |
| Working state | Current |
| Source model | currently open source with proprietary components[citation needed], previously open source |
| Initial release | November 15, 2000; 22 years ago (2000-11-15) |
| Latest release | 23.1.0 / October 25, 2023; 19 days ago (2023-10-25) |
| Repository | github |
| Platforms | Current: x86-64, 64-bit ARM, 32-bit ARM (32-bit ARM support is closed-source) Historical: PowerPC (32-bit and 64-bit), IA-32 |
| Kernel type | Hybrid (XNU) |
| Default user interface | Command-line interface (Unix shell) |
| License | Mostly Apple Public Source License (APSL), with closed-source drivers[4] |
| Official website | opensource |
Darwin is mostly POSIX-compatible, but has never, by itself, been certified as compatible with any version of POSIX. Starting with Leopard, macOS has been certified as compatible with the Single UNIX Specification version 3 (SUSv3).[5][6][7]
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