Ubuntu 8.04 has introduced a new option for virtualization: Virt-Manager. Using Virt-Manager, libvirt, and KVM, you can take advantage of the virtualization hardware built-in to recent CPUs.

Virt-Manager is a GUI for managing virtual machines with the Libvirt toolkit. KVM is the infrastructure in the Linux kernel that uses Intel and AMD’s virtualization extensions. I installed and set up Virt-Manager with KVM on Ubuntu 8.04, where they are both easily installable from the repositories.

Here are some screenshots: