oVirt is a virtualization management framework of KVM

oVirt is a virtualization management framework constisting of a small host image, the oVirt Node, that provides the libvirt service to host virtual machines, and a robust vm management software stack, controlled by a web-based management interface, the oVirt Server. This stack provides pxe and other automated vm boot / appliance solutions; various vm operations, task, vnc, and other access; and a secure authentication based on freeIPA.

Current the oVirt Node runs KVM. Patches are welcome to support other hypervisors and work will be underway to support Xen based Nodes in the near future