Currently yiffOS offers multiple methods of virtualization officially, KVM (libvirt) and LXC are packaged for system virtualization, and Podman is packaged for application virtualization.
Unofficially, both VMWare Player/Workstation and VirtualBox have been tested and do work.
Install the libvirt package using Bulge.
systemd-sysusers & systemd-tmpfiles –create after installation to create the necessary users and directories.
If you'd like a graphical UI you can either use the virt-manager package or cockpit-machines for a web based UI.
Install the lxc package using Bulge.
Install the podman package using Bulge.