VirtualBox - A program to run on the same computer multiple virtual operating systems. This is a convenient and functional tools for virtualization, calculated as the corporate and home users. The program supports many different guest operating systems family Windows (NT/2000/XP/2003/Vista/7/8), as well as DOS and Linux. As in other similar applications, there exists the possibility to start and stop the guest OS, configure the use of computer resources, data exchange between host and guest operating system, taking screenshots of virtual systems and much more.