qemu : QEMU + Kernel-based Virtual Machine userland tools ( https://www.qemu.org https://www.linux-kvm.org )
virtualbox : Family of powerful x86 virtualization products for enterprise and home use ( https://www.virtualbox.org/ )
virtualbox-kvm : Family of powerful x86 virtualization products for enterprise and home use ( https://www.virtualbox.org/ https://github.com/cyberus-technology/virtualbox-kvm )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a bentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/bentoo-portage
If you have a problem : ycarus(-at-)zugaina.org