Run Windows and Other Operating Systems on Your Intel Mac
Simultaneously!
Compatibility
Architecture: x86 (Intel:Mac)
Requires Mac OS X 10.4.6 or greater
Note that under 10.6.8 the installed Parallels.app wouldn't work,
complaining about the OS version. Directly running
Parallels.app/Contents/MacOS/Parallels works fine, although the system
opens a terminal window to do so.