is freely available as Open Source Software under the terms of the GNU General Public License (GPL).
Can I buy a commercial license for VirtualBox? If you are an individual end user, there is generally no need to purchase a commercial license, provided that you respect, in the case of VirtualBox OSE, the terms and conditions of the GPL, or, in the case of the full VirtualBox package, those of the Personal Use and Evaluation License. As an enterprise customer, we encourage you to purchase commercial licenses from Oracle and receive benefits such as access to enterprise features and support for mission-critical use of VirtualBox. We also encourage ISVs and IHVs to incorporate VirtualBox into their offerings, preferably through a custom license deal with Oracle. Please contact Oracle for additional information.