qemu

• http://fabrice.bellard.free.fr/qemu/ Fast processor emulator using a portable dynamic translator.

• Full system emulation

• Emulates the processor and various peripherals Supported: x86, x86_64, ppc, arm, sparc, mips, m68k

• To know which machine types are supported: qemu-system-arm -M ?

• i386, x86_64 system emulation: now close to native speeds thanks to the kqemu kernel module (now GPL v2!).