Quest Software to Offer Application Management Solutions for Microsoft .NET via Agreements with AVIcode; AVIcode Extends Quest's Application Management Solutions to .NET Platform

Business Wire, April 25, 2006

SAN DIEGO -- At the Microsoft Management Summit 2006, Quest Software Inc. (Nasdaq: QSFT) announced its entry into the Microsoft .NET application management marketplace through a series of commercial relationships with AVIcode, a privately held firm. The transactions include agreements for product distribution, joint research and development activities and marketing and sales initiatives, and a Quest equity investment in AVIcode, the terms of which are not being disclosed. Separately, Quest today announced additional support for Microsoft Operations Manager (MOM) 2005, including extending its monitoring capabilities across the heterogeneous enterprise to encompass Unix and Linux environments (see related release).

Beginning next quarter, Quest will market and distribute its version of AVIcode's Intercept Studio and .NET Management Pack (Enterprise Edition) for Microsoft Operations Manager 2005. These products will be integrated with Quest's application management solutions to deliver, manage, and control complex application environments from end user to database.

"Microsoft .NET is the leading application development environment, with more than 44 percent of custom-developed applications being developed in .NET, according to a recent Forrester report(1)," said Larry Humphries, vice president, product management, Quest Software.

"Forward-looking independent surveys show that as many as 77 percent of organizations plan to migrate to or build new applications with the .NET platform over the next 12 months. We believe AVIcode's .NET performance management solutions are the clear leaders because of their superior diagnostic capabilities and AVIcode's strong relationship with Microsoft. The combination of MOM 2005, Visual Studio 2005, and the AVIcode solutions will help Quest customers ensure the ongoing availability and performance of their critical .NET applications."

The Quest performance management offering for .NET will provide a consolidated real-time view of .NET production applications, including health status indicators and root cause analysis of connectivity issues, security issues, code failures, and performance degradations. The solution will operate in an always-on state, automatically detecting application errors when they occur while also pinpointing errors down to the line of problem code. The offering will seamlessly integrate with Microsoft Visual Studio 2005 so users can easily pull up problem components in their development environment.

"This collaboration enables us to better deliver monitoring technology to the rapidly expanding .NET marketplace," said Mike Curreri, CEO of AVIcode. "We are pleased to announce this newest commitment to our technology, and believe it is further evidence of our leadership position in the application monitoring space."

"Microsoft is pleased to see the development of this relationship between two of our key partners," said Felicity McGourty, director of Product Management and Marketing at Microsoft Corp. "Together, Quest and AVIcode are extending MOM 2005 even further for monitoring and control of .NET applications, helping customers benefit from a single integrated approach to managing their environments."

About AVIcode

AVIcode, Inc. is the leading provider of .NET application monitoring software. AVIcode's products are designed to protect software investments by detecting application errors before they impact business. AVIcode's flagship product, Intercept Studio, operates in an always-on state and detects code failures and performance degradations of .NET applications in real-time. AVIcode's technology simplifies application maintenance and troubleshooting and dramatically reduces defect resolution time. For more information, contact AVIcode at 443-543-0030 or info@avicode.com, or visit the company Web site at www.avicode.com.

About Quest Software, Inc.

Quest Software, Inc. delivers innovative products that help organizations get more performance and productivity from their applications, databases and Windows infrastructure. Through a deep expertise in IT operations and a continued focus on what works best, Quest helps more than 18,000 customers worldwide meet higher expectations for enterprise IT. Quest Application Advantage lets organizations deliver, manage and control complex application environments. Only Quest provides the deepest understanding of the application -- from end user to database. Quest Software can be found in offices around the globe and at www.quest.com.

Quest and Quest Software are registered trademarks of Quest Software, Inc. The Quest Software logo and all other Quest Software product or service names and slogans are registered trademarks or trademarks of Quest Software, Inc. All other trademarks and registered trademarks are property of their respective owners.

(1) Trends 2006: Language And Platform Adoption, Forrester Research, Inc., March 2006.

Forward-Looking Statements

This release may include predictions, estimates and other information that might be considered forward-looking statements, including statements concerning the availability and market acceptance of our .NET application monitoring solutions and the prospects for our commercial relationships with AVIcode. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ from those anticipated as a result of various factors, including the impact of economic conditions on our customers, variations in the size and timing of customer orders; competitive products and pricing; rapid technological change; risks associated with the development and market acceptance of new products; disruptions caused by acquisitions of companies and/or technologies including risks relating to integration of the combined companies; risks associated with international operations; and the need to attract and retain qualified personnel. For a discussion of these and other related risks, please refer to our recent SEC filings, including our Annual Report on Form 10-K for the year ended December 31, 2005. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date thereof. We undertake no obligation to update forward-looking statements to reflect events or circumstances after the date thereof.