OVirt

From the oVirt webpage:

"oVirt manages virtual machines, storage and virtualized networks."

oVirt has been designed for use with KVM, but some experiments have been run with the Xen Project Hypervisor. The link below describes what does and does not work.

HOWTO

The state of oVirt with Xen Project can be found here: http://www.ovirt.org/Xen