VMware vs. Xen vs. Microsoft

"VMware owns the lion's share of the virtualization market in terms of both revenue (the company's revenue doubled in 2006 to $709 million from the year before) and mindshare (the company's annual user show in San Francisco this year recently drew 10,000 supporters). To ice it off, the company also had a huge IPO this summer.

"Yet open source Xen, which doesn't even make the single digits on any analyst's set of predictions, and its commercial instantiation XenSource may still have a chance in the corporate market. And don't overlook Microsoft's Windows Server Virtualization offering either..."

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