Well, then you got Mac OS X, which is based on Unix
It is not based off Unix, it is based on XNU (XNU isn't Unix) which is a cross between BSD and Mach.
It is not based off Unix, it is based on XNU (XNU isn't Unix) which is a cross between BSD and Mach.
Uhh, right from Apple's website:
http://www.apple.com/macosx/
Start a Revolution on Your Desktop
Mac OS X Tiger will change the way you use a computer. Breakthrough search technology, stunning graphics and media, unparalleled connectivity, an intuitive user interface and a virtual toolbox chock full of cleverly integrated features — all atop a rock-solid UNIX foundation — give you the most innovative, stable and compatible desktop operating system on the planet. Period.
Mac OS X Tiger will change the way you use a computer. Breakthrough search technology, stunning graphics and media, unparalleled connectivity, an intuitive user interface and a virtual toolbox chock full of cleverly integrated features — all atop a rock-solid UNIX foundation — give you the most innovative, stable and compatible desktop operating system on the planet. Period.
See? According to Apple themselves, it is based somewhat off of a Unix Foundation, so there you have it... Of course, the X360 being PPC-based (which was Apple's processor before Intel stepped in), will all come together almost natively when the X360 is modded in just the right way.