In addition to developing and selling the Xen hypervisor with its own products, Novell has been a key
ally of both Microsoft and VMware in the virtualization market. Its Linux-Windows virtualization-integration efforts and
cross-platform management products have helped Microsoft keep its toehold in the virtualization market while waiting for the
release of its own Hyper-V. Novell is one of the few virtualization vendors whose strategy clearly includes more than one OS.
It made its big virtualization acquisition in February; but rather than buying a hypervisor developer, as Citrix did, it
bought Toronto-based Platespin, which makes workload-management applications and tools to help companies migrate to
virtualized data centers. VMware gives away similar migration tools, but some analysts believe
Novell’s relative neutrality in a market increasingly polarized as Microsoft vs. VMware may serve it well as it focuses
on management instead of platforms.