Client hypervisor  In computing, a client hypervisor is a hypervisor that is designed for use on client computers such as laptops, desktops or workstations, rather than on a server. It is a technique of host virtualization which enables the parallel execution of multiple operating systems (or virtual machines) on shared hardware. These "guest" systems may be used for a wide variety of tasks normally performed by dedicated physical computer systems. Client hypervisors are included in cloud computing and IaaS (Infrastructure as a Service) designs. Some well-known client hypervisors are VMware Workstation, VirtualBox and VirtualPC. Client hypervisors are categorized in two types: