
Then, using the VirtualBox, many other operating systems (Guest OSs) can be loaded and run. VirtualBox is installed on top of the existing operating system (host systems). Its original creator is innotek GmbH, which was bought by Sun Microsystems. It is released as a member of their family of virtualization products. VirtualBox (Oracle VM VirtualBox) is a virtualization package for x86, developed by Oracle corporation.

Meanwhile, VMware and Parallels are the two major players in the Mac consumer virtualization (commercial) software market. VirtualBox is the most popular VM software at the moment.

VirtualBox, VMware and Parallels are three of the most popular platform VM software. Most of such software allows having multiple machines on top of one physical platform. Platform Virtual Machines (VM) are being used very heavily because they provide the ability to emulate a complete physical computer machine on top of another.
