A very interesting article from The Register has been published which contains information on how many different virtualisation technologies companies use at the time. This clearly shows that there is no single winner when it comes to commercial use of technologies such as Xen, KVM or VMWare's solutions.
GigaTux will keep on using Xen for now, but are keeping an eye on KVM particularly. We are intending on only considering open source virtualisation solutions, so VMWare is out of the picture for us, but the article above certainly shows that competition is present, and competition is generally a good thing!
What we found is that the large majority of customers (71 per cent) haven’t settled on a single x86 virtualization solution. Although 82 per cent of our survey respondents said that they are using VMware on at least some of their systems, we found that Xen variants from Citrix, Sun/Oracle, and Xen.org were being used by more than half of the customers we surveyed. Another 31 per cent of customers said that they use KVM.
