ELI5: Explain Like I'm 5

GNOME Boxes

Gnome boxes is a computer program that lets you create virtual computers. It's like having a fake computer inside your real computer. You can do things in this fake computer, like install programs and applications, that don't affect the real computer. This is useful if you want to try out some new software, but don't want to risk damaging your real computer. With Gnome boxes, you can create a "virtual machine" and experiment without worrying about making any changes to your real computer.