Virtualize every you wants with just two lines of shell script. Start a virtual environment without memory consumption or particular hardware requirements.

Qemu can simulator different cpu ( arm/x86/ppc/mips) winin linux/windows/mac os. And simulate in different level as system mode simulation and user mode simulation.

QEMU is an emulator and virtualization machine that allows you to run a complete operating system as just another task on your desktop. It can be very useful for trying out different operating systems, testing software, and running applications that won't run on your desktop's native platform. QEMU runs on x86 systems running Linux, Microsoft Windows, and some UNIX platforms, and can host target systems from a range of different microprocessors as detailed on the QEMU website. QEMU has the advantage of being able to run either as a pure emulator or as a native virtual machine (on x86 / x86-64 hardware).