WeedBox is a PyGtk GUI for kqemu. It allows you use kqemu like VMWare or VirtualBox.
kqemu the QEMU Accelerator Module increases the speed of QEMU when a PC is emulated on a PC. It runs most of the target application code directly on the host processor to achieve near native performance. It is very useful when you want to run another Operating System (for example Windows) on a Linux desktop. Currently it is available for Linux x86 or x86_64 hosts running a kernel 2.4.x or 2.6.x.