Q is a free emulator software that runs on Mac OS X, including OS X on PowerPC. Q is Mike Kronenberg's port of the open source and generic processor emulator QEMU. Q uses Cocoa and other Apple technologies, such as Core Image and Core Audio, to achieve its emulation. Q can be used to run Windows, or any other operating system based on the x86 architecture, on the Macintosh.
Q is available as a Universal Binary and, as such, can run on Intel or PowerPC based Macintosh systems.
Unlike QEMU, which is a command-line application, Q has a native graphical interface for managing and configuring virtual machines.
