QEMU, KVM and the other ones

Virtual Box and VMWare, with their friendly GUIs, are great tools for spinning up VMs on whatever OS you happen to be running at the time. They also both have command line interfaces, and VMWare Pro has all kinds of enterprise management features. So if you want to deal with more VMs than you can comfortably fit on your screen at once, these tools are more than fit for purpose.

Linux has its own virtualisation solution, (the ) and it’s hugely popular, both at home and at scale. As the name suggests, resides in the kernel, and transforms it into a hypervisor. But to make use of it, we need a userspace program, which is an emulator, but also a virtualiser.