<span class="application">VirtualBox</span> has a free software version, called <span class="application">VirtualBox Open Source Edition</span> and some proprietary components, for example to add support for USB devices.
<p>With the <a href="https://www.virtualbox.org/manual/ch04.html#sharedfolders"> <span class="guilabel">shared folders</span></a> feature of <span class="application">VirtualBox</span> you can access files of your host system from within the guest system.</p>
In our [[security warnings about virtualization|virtualization#security]] we recommend to run Tails in a virtual machine only if the host operating system is trustworthy.
For instructions on how to install *VirtualBox* on other operating systems, refer to the [VirtualBox documentation](https://www.virtualbox.org/wiki/End-user_documentation).