VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. VirtualBox an feature rich, high performance product for enterprise customers, it is also a professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). Guest operating systems includes but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), and OpenBSD.