Virtual infrastructure manager

Lists/comparisons
http://www.mcs.anl.gov/uploads/cels/papers/P1649.pdf
http://www.qsos.org/?p=129
http://ajmf.wordpress.com/2009/06/08/management-interfaces-for-the-kernel-virtual-machine-kvm/
https://dspace.ucalgary.ca/bitstream/1880/47206/1/2009-928-07.pdf

Commercial (including public could):
Amazon (AWS)
VMWare's Virtual Center http://www.vmware.com/products/vi/vc/
Platform Computing's Virtual Machine Orchestrator http://www.platform.com/products/platform-vm-orchestrator/
3Tera's AppLogic http://www.3tera.com/applogic/

Free
Eucalyptus http://www.eucalyptus.com/
Convirt http://www.convirture.com/
Abiquo http://www.abiquo.com/en/products/abicloud
OpenNebula http://www.opennebula.org/
Nimbus http://workspace.globus.org/
oVirt http://ovirt.org/ *KVM only
virt-manager http://virt-manager.et.redhat.com/
openQRM http://www.openqrm.com/
Enomaly http://www.enomaly.com/
Proxmox VE http://www.proxmox.com/cms_proxmox/en/virtualization/proxmox-ve/proxmox-ve-startseite.html