Compare ConVirt and oVirt

ConVirt Open Source
http://www.convirture.com/products_opensource.php

ConVirt Enterprise
http://www.convirture.com/products_enterprise.php

ConVirt Enterprise Cloud
http://www.convirture.com/products_cloud.php

oVirt
http://www.ovirt.org/

Management interfaces for the Kernel Virtual Machine (KVM)
http://ajmf.wordpress.com/2009/06/08/management-interfaces-for-the-kernel-virtual-machine-kvm/

A Survey of Virtualization Naming
http://ebroder.net/2010/03/25/virtastic-a-survey-of-virtualization-naming/