1. A virtualization system for a host computing device having at least one host processor and system resources including memory divided into most privileged system memory and less privileged user memory, the system comprising: a virtualization boot application that operates in the less privileged user memory and divides the host computing device into a resource management partition, at least one virtual service partition and at least one virtual guest partition, the at least one virtual guest partition providing a virtualization environment for at least one guest operating system, the virtual service partition providing a virtualization environment for the basic operations of the virtualization system, and the resource management partition maintaining a resource database for use in managing the use of the at least one host processor and the system resources; at least one monitor that operates in the most privileged system memory and maintains guest applications in the at least one virtual guest partition within memory space allocated by the virtual service partition to the at least one virtual guest partition; and a context switch between the at least one monitor and the respective virtual guest partitions and the virtual service partition for controlling multitask processing in the partitions on the at least one host processor.