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What is the Xen Project?

The Xen Project™ – hosted by – is the home for several virtualization related open source projects and XEN PROJECT is the new name for the XEN open source community. The Xen Project™ develops virtualization technologies powering the world's largest clouds in production and is the foundation of many commercial products. Technology developed by the Xen Project™ powers public clouds such as Amazon Web Services, Rackspace Public Cloud and many others. Examples of Xen based server products include Huawei UVP, Oracle VM and XenServer. Examples of client products and appliances include QubesOS, XenClient and Netscaler. The Xen Project™ is 10 years old, and the technology it has created is mature and its stability and versatility is second to none.

Xen Projects

The Xen Project™ has created a number of open source technologies for specific purposes:

  • The Xen® Hypervisor is the open source standard for hardware virtualization and the foundation for all solutions hosted on — Learn More
  • The Xen Cloud Platform is an enterprise-ready virtualization platform based on the Xen® Hypervisor, adding further functionality and many integrations for cloud, storage and networking solutions. — Learn More
  • Xen ARM is a Xen based Hypervisor that targets embedded and mobile devices on the ARM architecture. — Learn More

If you are unsure, which Xen project is best for you, you may want to read the Xen Overview document which introduces Xen's architecture, components and some of the key choices you will have to make.

Open Source

Software hosted on is, and always will be, open source. The code is licensed under the GNU General Public License (GPL2). For more information check the legal page. Projects hosted on are developed by a world-wide community of individuals from around the globe that follow a governance process based on openness, transparency and meritocracy.

Xen Hackathon, Dublin, May 16 & 17

I am pleased to announce the next Xen Hackathon. The Hackathon will be hosted by the Ganeti team at Google and takes place on May 16-17, 2013 at Google's offices in Dublin Ireland.

Xen Hackathon Logo

More information ...

Xen Events: Save the dates!

We are still establishing the Xen event calendar for 2013. We are also looking for a vendor who would like to host a XenSummit in the US in May or June, 2013. Please contact community.manager at, if you would like to host a XenSummit.

However, the following dates and locations have been agreed already. More information to follow in due course:

  • XenSummit EU, Edinburgh, UK: October 24 & 25

Recent Events

FOSDEM '13, February 2 & 3, Brussels, Belgium

Check out our FOSDEM Event Report.

Also check out George Dunlap's presentation on Securing your cloud with Xen's advanced security features

XenSummit North America 2012

XenSummit has been a tremendous success this year. Thank you to all theMay 16 & 17 speakers for contributing and to all the attendees for making XenSummit an interactive and fun conference with lots of discussions. You can find presentations on slideshare and videos on vimeo. We will also embedded both in the agenda. The slides are also available for download as zip file.

It is becoming a little bit of a XenSummit tradition that our large users such as AWS and Google shared how they use Xen at XenSummits. This year, Chris Behrens from RackSpace cloud talked about Scaling Xen within Rackspace Cloud Servers:

Check out the presentation!

Xen at OSCON 2012

Check out the presentations and videos from our Xen and XCP tutorial with presentations from George Dunlap, Josh West, Patrick F. Wilbur and Steven Maresca.

XCP Update

Mike McClurg, the XCP project gives an update on the Xen Cloud Platform project.

DebConf 2012

Ian Campbell, Ian Jackson and Thomas Goirand talked about Xen, XCP and related topics at DebConf this year. Check out the following videos: Xen and Debian: Past, Present & Future, Incompatibility and pain - a perspective from Xen upstream and Cloud Computing on Debian.

Introduction to XCP @ Virtual Build a Cloud Day

Featured Stories


Latest Product Releases


Travel Stipends for Presenters

If you have something to say about Xen – as a developer or user – and would like to submit Xen talks, but cannot afford the travel, please contact community.manager at before you submit a talk proposal. We can usually find a company in the Xen eco-system that will sponsor talks given by community members.



Featured Presentations

Linaro Connect: Introduction to Xen on ARM

With the introduction of virtualization extensions on ARM processors, the Xen community has taken steps to add ARM support for ARM CPUs to the Xen Hypervisor. This port is executed as part of of the Hypervisor project, with no separate codebase.

Xen engineers describe the key challenges they have overcome, current technical status and discuss the next steps.

Also see:

Scale 11x : Virtualization with Xen and XCP