Xen Project Archives
Official Xen Project Source Releases
The Xen Project hypervisor is available as source distribution from these download pages. You can find instructions on how to build the Xen Project source release at this page.
Sources for Xen Project Binaries
You can get recent Xen Project binaries as packages from most Linux and Unix distributions, both open source and commercial. Some Linux distributions deliver Xen Project software as a LiveCD, that you can use to easily test the Xen Project hypervisor.