Open Text s Software Selected by Marathon for Enterprise-wide Content and Records Management

Integration with Microsoft® Office SharePoint Server Cited as Key Factor in Decision to Standardize on Open Text System; Announcement Reaffirms Open Text s Strong Position in the Oil and Gas Industry

Chicago, IL - 2007-12-06 - Open Text Corporation (NASDAQ: OTEX, TSX: OTC), a global leader in enterprise content management (ECM), today announced that Marathon Oil Corporation (NYSE: MRO), the fourth-largest U.S.-based integrated oil and gas company, has selected Open Text as its ECM software provider for its company-wide enterprise content and records management solution. The software, which will be deployed to about 20,000 users around the world, will help Marathon improve business processes and give employees new ways to share business content, including documents, records, email, Web content, and information stored in Microsoft Office SharePoint Server.

Open Text s approach of enabling a centralized view of business content across all systems, repositories and geographies, and the company s ECM integration with Microsoft Office SharePoint Server and Microsoft Exchange, were powerful drivers in the company s decision to go with Open Text.

The major objective of the Enterprise Content Records Management (ECRM) program is to make sure that Marathon personnel are accessing relevant, up-to-date and trusted information. This includes the ability to identify, capture, preserve, and classify records from across the Marathon enterprise. Our selection of Open Text as our ECRM standard includes an end-user interface strategy to integrate Microsoft SharePoint with Open Text s software, so employees can continue to work in Microsoft interfaces, while we implement the lifecycle management capabilities we need from Open Text, said Doug Couch, ECRM Program Manager for Marathon.

Federated search capabilities will provide the ability to search not only SharePoint Server content across multiple sites, but also content stored in Open Text s ECM repositories.

To manage email, Marathon will use Open Text s email management solution for Microsoft Exchange. The solution combines foundational email archiving with records management capabilities.

"Locating, accessing and preserving information across multiple corporate repositories is becoming increasingly important as oil and gas companies focus on productivity and complying with the regulations governing the energy sector, said Steve Best, Vice President, Energy and Chemical Sales at Open Text. We are pleased that Marathon Oil has chosen to work with Open Text for its ECRM program."

About Open Text
Open Text, an enterprise software company and leader in enterprise content management, helps organizations manage and gain the true value of their business content. Open Text brings two decades of expertise supporting 46,000 customers and millions of users in 114 countries. Working with our customers and partners, we bring together leading Content Experts to help organizations capture and preserve corporate memory, increase brand equity, automate processes, mitigate risk, manage compliance and improve competitiveness. For more information, visit www.opentext.comwww.opentext.com.

Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995
This news release may contain forward-looking statements relating to the success of any of the Company s strategic initiatives, the Company s growth and profitability prospects, the benefits of the Company s products to be realized by customers, the Company s position in the market and future opportunities therein, the deployment of Livelink and our other products by customers, and future performance of Open Text Corporation. Forward-looking statements may also include, without limitation, any statement relating to future events, conditions or circumstances. Forward-looking statements in this release are not promises or guarantees and are subject to certain risks and uncertainties, and actual results may differ materially. The risks and uncertainties that may affect forward-looking statements include, among others, the failure to develop new products, risks involved in fluctuations in currency exchange rates, delays in purchasing decisions of customers, the completion and integration of acquisitions, the possibility of technical, logistical or planning issues in connection with deployments, the continuous commitment of the Company's customers, demand for the Company's products and other risks detailed from time to time in the Company's filings with the Securities and Exchange Commission (SEC), including the Form 10-K for the year ended June 30, 2007. You should not place undue reliance upon any such forward-looking statements, which are based on management's beliefs and opinions at the time the statements are made, and the Company does not undertake any obligations to update forward-looking statements should circumstances or management's beliefs or opinions change.

Copyright © 2007 by Open Text Corporation. LIVELINK ECM and OPEN TEXT are trademarks or registered trademarks of Open Text Corporation in the United States of America, Canada, the European Union and/or other countries. This list of trademarks is not exhaustive. Other trademarks, registered trademarks, product names, company names, brands and service names mentioned herein are property of Open Text Corporation or other respective owners.

For more information, please contact

Richard Maganini
Open Text Corporation
+1-847-267-9330 ext.4266
rmaganin@opentext.com

Michele Stevenson
Open Text Corporation
+1-519-888-7111 ext.2594
mstevens@opentext.com

Brian Edwards
McKenzie Worldwide
+1-503-577-4583
briane@mckenzieworldwide.com