Red Hat Virtualization (RHV)

“There is no extra cost involved, it comes free with Linux and is open source. … Cost efficient as it is open source and you don't have to pay extra, comes with Linux Less manpower to manage multiple hardware High performance also results in time saving.”

“Less expensive solution than VMware and includes more features! … RHEV is an excellent product, includes more features, is less expensive, and has rock solid reliability and is backed with the best Red Hat Support in the industry.”

“Additionally ESXi licenses tend to be more expensive than using RHEV or it's freely available sibling oVirt.”

“Red Hat Virtualization is the best enterprise-level virtualization software for an organization that needs cost-effective and flexible solutions for its environment. … We are managing 100 plus Virtual machines with RHEV in our environment and using the hardware efficiently as well as saving the cost of our project.”

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It might be less appropriate if you are just needing to save cost.”