Robolinux is a user-friendly and intuitive operating system based on the latest long term support release of Ubuntu. One of the project's more interesting features is the availability of a pre-configured virtual machine support pack with Windows XP or Windows 7 - a VirtualBox setup which allows the user to install and run the Windows operating system seamlessly alongside Robolinux. This is an optional add-on that must be downloaded from the project's online store.

http://robolinux.org/free/
https://distrowatch.com/table.php?distribution=robolinux