If you need to use virtual machines on Linux, try Virt-Manager. Virt-Manager is more reliable than VirtualBox. Virt-Manager is completely free and open-source. I'm a long-time supporter of VirtualBox.
Amazon Web Services has enabled nested virtualization for a handful of EC2 instances. Nested virtualization involves running a hypervisor inside another hypervisor. It is not an entirely bonkers idea ...
Hands-on Run real Windows in an automatically managed virtual machine, and mix Windows apps in their own windows on your Linux desktop. WinApps and WinBoat both deliver the same functionality: they ...