There is also Hyper-V and Virtual Machine Manager and Azure Stack that might be an alternative for companies that ran Windows on their vSphere environment. I've seen Windows shops already switch to that because the licensing a lot cheaper.
There's also Nutanix, RedHat and other options that people have mentioned here.
Unfortunately post-IBM aquisition, Red Hat's closest equivalent (RHEV) was killed off. You've got OpenStack and k8s VMs now, neither of which are really what people running VMWare are looking for I suspect.
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There is also Hyper-V and Virtual Machine Manager and Azure Stack that might be an alternative for companies that ran Windows on their vSphere environment. I've seen Windows shops already switch to that because the licensing a lot cheaper.
There's also Nutanix, RedHat and other options that people have mentioned here.
Unfortunately post-IBM aquisition, Red Hat's closest equivalent (RHEV) was killed off. You've got OpenStack and k8s VMs now, neither of which are really what people running VMWare are looking for I suspect.
Funny part is IBM is one of the largest users of VMWare and IBM cloud is based on Ubuntu .