What Kernel does Apple use in it’s Mac OS Operating System

Darwin

The OS X kernel is an Open Source project. The kernel, along with other core parts of OS X are collectively referred to as Darwin. Darwin is a complete operating system based on many of the same technologies that underlie OS X. However, Darwin does not include Apple’s proprietary graphics or applications layers, such as Quartz, QuickTime, Cocoa, Carbon, or OpenGL.

The relationship between Darwin and OS X. Both build upon the same kernel, but OS X adds Core Services, Application Services and QuickTime, as well as the Classic, Carbon, Cocoa, and Java (JDK) application environments. Both Darwin and OS X include the BSD command-line application environment; however, in OS X, use of environment is not required, and thus it is hidden from the user unless they choose to access it.

 

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