Red Hat Virtualization is a hypervisor + hypervisor mangement project based on the opensource KVM hypervisor and the opensource oVirt hypervisor mangement project.
Red Hat OpenStack could refer to RPM Distribution of OpenStack (RDO) or Red Hat OpenStack Platform (RHOSP). RDO is the community supported version of OpenStack and RHOSP is Red Hat’s commercially supported version. Though both lag behind the main OpenStack code base, RDO is a little more current than RHOSP. They each have very different ways to install OpenStack but the end result is basically the same: an OpenStack installation. In very general terms, OpenStack could be considered a hypervisor management platform.
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