Virtualization:

VMWare We have been using VMWare since its earliest releases. It is the defacto virtualization software for most end users. It is capable of running ON most OS platforms and can virtualize most OS platforms. There are numerous premade vm machines which can be downloaded from VMWare's site. You can also move a vm machine between physical systems, THE ultimate way to carry your work with you. VMWare also offers free Server and Hypervisor products which require more robust hardware, but offer a wider range of features