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OpenDarwin was a community-led operating system based on the Darwin system. It was founded in April 2002 by Apple Inc. and Internet Systems Consortium. Its goal was to increase collaboration between Apple developers and the free software community. Apple benefited from the project because improvements to OpenDarwin would be incorporated into ...
XNU ("X is Not Unix") is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X (now macOS) operating system and released as free and open-source software as part of the Darwin OS, which, in addition to being the basis for macOS, is also the basis for Apple TV Software, iOS, iPadOS, watchOS, visionOS, and tvOS.
At macOS's core is a POSIX-compliant operating system built on top of the XNU kernel, [81] (which incorporated large parts of FreeBSD kernel [14]) and FreeBSD userland [14] for the standard Unix facilities available from the command line interface. Apple has released this family of software as a free and open source operating system named Darwin.
Darwin it's not itself an operating system, it's just the kernel that power OS X. Being Darwin opensource there is also it's open counterpart called opendarwin. The opendarwin community also develop the a GNU-Darwin OS that is a free-software only OS and adopt GNOME as a userland enviroment.
Mac OS X is built on Darwin, a Unix-like operating system derived from FreeBSD. Darwin includes a new kernel, XNU, derived from Mach and BSD, as a replacement for the Mac OS nanokernel used in classic Mac OS. Unlike Mac OS 9, Mac OS X has protected memory and preemptive multitasking. This means that if an application's memory becomes corrupted ...
This new operating system was initially without organizational backing, and also without a name. The new operating system was a single-tasking system. [17] In 1970, the group coined the name Unics for Uniplexed Information and Computing Service as a pun on Multics, which stood for Multiplexed Information and Computer Services.
XDarwin is an obsolete X Window System (X11) display server for the Darwin operating system and early versions of Mac OS X. XDarwin allows one to use programs written for X11 on those operating systems. XDarwin was ported by the XonX project, an offshoot project created by XFree86 developers.
A kernel is a component of a computer operating system. [1] A comparison of system kernels can provide insight into the design and architectural choices made by the developers of particular operating systems.