Darwin is an open-source Unix 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.
|Written in||C, C++, Objective-C, assembly language|
|OS family||Unix, BSD|
|Source model||Open source|
|Initial release||November 15, 2000|
|Latest release||21.5.0 / March 18, 2022|
|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
|Command-line interface (Unix shell)|
|License||Mostly Apple Public Source License (APSL), with closed-source drivers|
|Part of a series on|
Darwin forms the Unix-based core set of components upon which macOS (previously OS X and Mac OS X), iOS, watchOS, tvOS, iPadOS and bridgeOS are based. It 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).
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