I remember some software which was like a virtual PC except you didn't need to install an OS, it used the real one. You installed software on it and could use the software in the "virtual PC" and it wouldn't do anything to your "real" computer then if you liked the software you could just transfer it (not reinstall it).
But I have no idea what the name of it was and searching for virtual PC in google doesn't help as its all just MS and Virtualbox. Does anyone know of this software?

