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Apple has a certified UNIX, macOS. macOS 12 and many earlier versions certified by TOG as a UNIX product along with AIX, HP-UX, and SCO OpenServer. Also, Apple
by gjsman-1000 4y ago
Apple has a certified UNIX, macOS. macOS 12 and many earlier versions certified by TOG as a UNIX product along with AIX, HP-UX, and SCO OpenServer.
Also, Apple's kernel (XNU) is somewhat open-source. Apple isn't really interested in contributions, but you can build it yourself and install it, and macOS will boot and run from it (the main exception being iOS apps on Apple Silicon, maybe Apple Pay, and FileVault gets disabled to make the modification and inability to fully secure your system obvious, those parts are closed source kernel extensions, but they aren't dealbreakers).