Quoting from the Cassatt official announcement:
Cassatt Corporation, an innovator in providing enterprise software to enable dynamic IT infrastructures, today announced a partnership with XenSource, Inc., the leader in infrastructure virtualization solutions based on the Xen open source hypervisor, under which Cassatt will be able to sell XenEnterprise alongside Cassatt’s products.
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The Cassatt Collage Cross-Virtualization Manager (XVM) is built using a vendor-neutral architecture, which will allow customers to host any combination of virtual machines. XVM will support XenEnterprise in the next release of the product later this calendar year…