VirtualBox is a powerful virtualization product for enterprise as well as home use. It is an extremely feature rich, high performance product targeted towards enterprise customers. It is available for free as Open Source Software under the terms of the GNU General Public License (GPL) version 2.
VirtualBox runs on Linux, Macintosh, Windows, and Solaris hosts. It supports a large number of guest operating systems including DOS/Windows3.x, Solaris and OpenSolaris, Linux (2.4, 2.6, 3.x and 4.x), OS/2, Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7, Windows 8, Windows 10), and open BSD.
VirtualBox has an ever growing list of supported guest operating systems and platforms it runs on and is being actively developed with frequent releases. VirtualBox is backed by a dedicated company where everyone is encouraged to contribute while Oracle ensures that the product always meets professional quality criteria.