VirtualBox is ridiculously simple to set up and get virtual machines going. Shared folders, shared clipboard and much more are no issue.
But.
It eats resources. The installed virtual machines (VM) run relatively slow. What have you found to be feature comparable - and most importantly more resource-efficient - alternatives for running VMs under Linux?
https://virt-manager.org/ is a no brainer. Built upon libvirt/Qemu/KVM it's way more powerful and pretty much just as easy to use. There is zero reasons to use anything else.