Who wrote the Mach MicroKernel?
The Mach MicroKernel, as used by MkLinux, was originally written at Carnegie Mellon University. Since then, it has been substantially altered by the Open Software Foundation (OSF), now part of the Open Group. Some time ago, Apple Computer asked the Open Group (then OSF) to work with them on a port of linux to the PowerMac. They began by creating an x86 version of MkLinux in order to get linux running on the Mach MK. They then wrote Mach drivers for the PowerMac.