[http://www.xenserver.org/ XenServer] by Citix is a powerful opensource hypervisor that can work well. Citrix does limit many of their features to the command line when using the opensource, free version. However, the management console is excellent and the product works on a wide variety of hardware. ([https://wiki.amahi.org/index.php/Amahi_in_Xenserver_without_Greyhole Install Guide])