Called VirtualBox software that allows users to use multiple virtual operating systems to the user. This software is in many ways better than VMware Workstation. For example, a volume of about 550 MB VMware Workstation is installed and the nature of the relatively large space needs. In contrast, only about 72 megabytes Sun's VirtualBox and VMware Workstation Nyst.srt dwarfed by the size of the load and virtual operating systems are extremely high and almost did not feel that the Windows user or operating system virtualization. One of the most important things that should be noted about this software supports Windows 7. The latest version of VMware Workstation to Windows Vista and Windows Server 2008, but VirtualBox supports Windows seven is not fully supported. The good news for people who want to watch the art of the new Microsoft operating system without losing their old, with this software, all in the hands of the user's operating system. Their user environment is very simple, and this factor helps users are much more likely to be attracted Svy software. The software installed without any trouble, and a variety of operating systems such as Linux, Windows, and full support. It is enough disk space allocated to the virtual operating system software to be installed. This product, as stated above the Sun's something that has unfortunately our country's name from the list of recipient countries to provide services to your site removed.