Skien, Norway, November 15^th, 2011 – eZ Systems AS, the creator of the award winning Open Source Web Content Management Platform, eZ Publish, today announced a partnership with Circdata. The UK based company is a leader in circulation management and event registrations for the publishing and event industry. The partnership will extend the powerful eZ Publish content management platform by adding Circdata's services and expertise in circulation management, event registrations and overall audience relationship management.