Zenoss Core Garners Top Honors for Open Source Network & Systems Management

ANNAPOLIS, MD, July 29, 2007 - Zenoss Inc., the company behind the most popular open source IT monitoring and management solution on Sourceforge.net, today announced that it has received two leading industry awards. Zenoss Core was awarded the Network World Clear Choice award for best open source network and monitoring tool. Additionally, the readers of Enterprise Open Source Magazine have chosen Zenoss Core as the Best Linux Systems Management Tool, edging out other industry leaders and respected commercial open source competitors.

"This award reflects the clear leadership and growth by Zenoss in the open source space," said SYS-CON Group Publisher & Editorial Director Roger Strukoff. "We are very proud of Enterprise Open Source Magazine's proactive role in helping to facilitate this community-driven process, and we congratulate Zenoss and its product team on all the work that underlies the winning of this prestigious award."

The SYS-CON Readers' Choice Awards program, held annually by SYS-CON Media, recognizes excellence in solutions provided by the top technology vendors. It is a community-driven process in which participating products are nominated by the industry's vendors, customers and users, as well as by the readers of SYS-CON Media's industry-leading i-technology publications.

The Network World Clear Choice awards are based on rigorous head-to-head tests, performed by Network World reviewers, between similar products. Zenoss Core received the highest marks versus the competition for monitoring, reporting, ease-of-use, and installation and documentation.

"We are grateful to all of those who have downloaded Zenoss, joined our community, and contributed to the project," said Zenoss CEO Bill Karpovich. "It is gratifying to be acknowledged both by the open source community and the media for the progress towards our mission of simplifying IT management."

The new version of Zenoss Core, an integrated IT management software solution, allows IT administrators to track the configuration and health of their entire IT environment. Zenoss Core is the first commercial open source IT management solution to include a configuration management database (CMDB), and adds several other features that deliver on the company's mission of simplifying enterprise IT management.

Zenoss Core is available for download at: http://www.zenoss.com/download

About Zenoss, Inc.

Zenoss, Inc. is the developer of the Zenoss Core commercial open source IT monitoring software platform. Zenoss Core allows IT professionals to manage the status and health of their entire infrastructures through a single web-based console. Zenoss Core is the most popular open source IT management solution on Sourceforge.net, the largest Internet destination for IT professionals seeking open source applications. Among the total of 150,000 projects listed on Sourceforge, Zenoss Core is among the 10 most active. Zenoss, Inc. also provides commercial services and a commercial edition of Zenoss Core through its Zenoss Enterprise subscription. The company's mission is to simplify IT management through the power of its unique software and open source approach. Zenoss, Inc. is privately held and headquartered in Annapolis, MD. For more information, please visit www.zenoss.com.