MacOS is a proprietary licensed operating system written in [[3. Reference/Software/Programming Languages/C|C]] and [[Objective C]]. - Website - GitHub - Documentation - AlternativeTo > QUOTE # Notability Formerly known as "Mac OSX", "OS X", and others. Built on top of the open source [[Darwin]] operaring system. Conceptually related to [[Mac OS Classic]] but sharing only perhaps a small amount of userspace code with it. Used by [[Apple Inc]] for their desktop and laptop computers. Variations of it are used for their other consumer devices such as phones (iOS), watches (watchOS), and television (tvOS) accessories. # Philosophy A lot of the core utilities and the kernel are open source, but the entire graphics system and most of the system libraries are proprietary. # Hardware Support Mac OS has been ported to several different ISAs, but removes support for them when Apple decides to. - [[ARM64]] - [[AMD64]] - [[POWERPC]] (up until Snow Leopard) - [[x86]] (32-bit up until Lion) # Features # Tips # History Based on [[Darwin]] using the [[XNU]] kernel. Descendant of [[NeXTSTEP]], itself a derivative of (primarily) [[FreeBSD]] combined with a variant of the [[Mach Kernel]]. # Resources - https://dortania.github.io/OpenCore-Install-Guide/ - https://github.com/sickcodes/Docker-OSX - [Sosumi](https://github.com/popey/sosumi-snap) - discontinued because the creator said it was "getting a little too much attention" https://forum.snapcraft.io/t/sosumi-not-found-on-repository/22295 # Related - [[Hello]] attempts to learn from the Mac OS UI and apply it to [[FreeBSD]] directly - [[ravynOS]] attempts to develop binary compatibility for Mac OS on a fully open FreeBSD core - [[Darling]] is a compatibility layer which allows some Mac OS programs to run on Linux # References