Vmware

"Free Hypervisor" are 100% identical to the paid version but with some software limitations. 

Tech Specs and Limitations

No commercial support (Community support)Free ESXi cannot be added to a vCenter ServerSome API functionality is missing (API is read-only)No physical CPU limitationNumber of logical CPUs per host: 480Maximum vCPUs per virtual machine: 8The Key is restricted to 100 Physical Servers deployments.

Other limitations like the 32GB Memory or 2 CPU Socket limit are no longer in place.

If you already obtained a free key for previous versions for ESXi, this key is not valid for vSphere 7.0, but you can use the same MyVMware Account to generate a new key.