Re: [Trisquel-users] why has no one made a fork of virtualbox in any form for linux?

[kjagustafson]

I also will recommend QEMU/KVM. It is a little trickier to use than  
Virtualbox (At least if you are going to try using the command line).  
Virt-Manager as recommended earlier is the easiest and most feature rich GUI  
available for QEMU/KVM. Gnome Boxes also works, but you won't be able to do  
much in terms of configuration. One thing to point out is to make sure when  
using KVM to use the virtio driver for the disk and network if possible. The  
virtio driver will speed up I/O tremendously.

As far as my experiences with QEMU/KVM, I find it to work a bit better than  
Virtualbox, but there is a steeper learning curve. It's worth it though,  
QEMU/KVM can do a lot of cool things and it's getting better all the time.