Xen

	Xen running NetBSD and three Linux distributions
Original author(s)	Keir Fraser, Steven Hand, Ian Pratt, University of Cambridge Computer Laboratory
Developer(s)	Linux Foundation; Intel
Initial release	October 2, 2003
Stable release	4.18.0 / 17 November 2023
Repository	xenbits.xen.org/gitweb/?p=xen.git ;
Written in	C
Type	Hypervisor
License	GPLv2
Website	xenproject.org

Xen (pronounced /ˈzɛn/) is a free and open-source type-1 hypervisor, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. It was originally developed by the University of Cambridge Computer Laboratory and is now being developed by the Linux Foundation with support from Intel, Citrix, Arm Ltd, Huawei, AWS, Alibaba Cloud, AMD, Bitdefender and epam.

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 Project is currently available for the IA-32, x86-64 and ARM instruction sets.^[4]

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^ "Xen Project 4.18 Release Notes". November 17, 2023.
^ jgross (April 2, 2019). "What's New In XEN 4.12". xenproject.org. Retrieved May 6, 2019.