Xen [SEP] license
Xen
Xen Project (pronounced ) is a type-1 hypervisor, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. It was
developed by the University of Cambridge and is now being developed by the Linux Foundation with support from Intel.
The University of Cambridge Computer Laboratory developed the first versions of Xen. The Xen Project community develops and maintains Xen Project as free and open-source software, subject to the requirements of the GNU General Public License (GPL), version 2.
Xen SOSP paper.
James Harper and the Xen open-source community have started developing GPL'd paravirtualization drivers for Windows. These provide front-end drivers for the Xen block and network devices, and allow much higher disk and network performance for Windows systems running in HVM mode. Without these drivers all disk and network traffic has to be processed through QEMU-DM. Subsequently, Citrix has released under a BSD license (and continues to maintain) PV drivers for Windows.
Xen Management Consoles.
Third-party developers