IRVINE, Calif., March 13, 2002 – Quest Software, Inc. (Nasdaq: QSFT), a leading provider of application management solutions, today announced the acquisition of Montreal-based BB4 Technologies, Inc., creators of the Big Brother System and Network Monitor. Big Brother, the first System and Network monitor to use the Web for publishing status information, is widely used in the system administrator community. With this acquisition, Quest Software plans to further enhance Big Brother and expand its user community by providing customers with a certified commercial version of the product, while continuing to maintain the free version for non-commercial use.

Adding Big Brother to Quest Software's existing product suite gives customers a monitoring solution that scales to meet their needs. Big Brother is a low-cost, lightweight monitor designed for organizations that need to monitor hundreds or even thousands of systems to maintain availability. Quest's existing monitoring solution, Foglight ® , delivers in-depth monitoring capabilities for critical business applications with integrated diagnostics for quick problem resolution. With the combined offering, Quest Software now delivers the breadth and depth an enterprise needs to maintain optimal performance and availability.

"Quest Software is very excited about the acquisition of Big Brother. Providing easy to use, lightweight products has always been a Quest philosophy and Big Brother obviously has that same philosophy—making this acquisition a natural fit" said Vinny Smith, CEO of Quest Software.

The founders of BB4 Technologies, Sean MacGuire and Robert-André Croteau, saw a clear opportunity to leverage the strengths of Big Brother with Quest Software to build the most comprehensive, yet easy-to-deploy and use monitoring solution available. "We are elated to join the Quest family. This acquisition will not only benefit our software and our users, but also gives us access to the extensive resources Quest has to offer to further develop Big Brother and expand our user community. The Big Brother community will benefit tremendously from this acquisition, since we will now offer technical support through Quest's renowned Support organization as well as provide certified product releases, continued product enhancements, and integration with Quest Software's in-depth diagnostics solutions."

Big Brother is a Web-based monitor that helps organizations maintain system and network availability by detecting problems and notifying systems administrators immediately via pager, e-mail alert or text message. In addition, it provides access to historical information so users can view prior issues, and track statistics to determine if service levels are being met. Big Brother uses a unique color-coded display to show the current system and network status and is designed to let users remotely view how monitored systems are performing from any Web browser or WAP device, such as a Blackberry or cellular telephone. For additional information on Big Brother, visit http://bb4.com.

About Quest Software, Inc.

Quest Software, Inc. is a leading provider of application management solutions. Our products increase the performance and uptime of business-critical applications while driving down the total cost associated with running those applications. By focusing on both the people and technology that make applications run, Quest Software enables IT professionals to achieve more with fewer resources. Quest Software is based in Irvine, California and has offices around the globe. For more information, visit www.quest.com.

Quest, Quest Software and Big Brother are trademarks and Foglight is a registered trademark of Quest Software, Inc. All other trademarks and registered trademarks are property of their respective owners.