[2] Entuity Joins Micromuse Developers Alliance Program.

Business/Technology Editors

SAN FRANCISCO & NEW YORK--(BUSINESS WIRE)--Nov.1, 2000

Eye of the Storm Software is Certified Netcool Ready to Provide

Enhanced Combined Fault and Performance Management Capabilities

Micromuse Inc. (Nasdaq: MUSE), the leading provider of fault and service-level management software, and Entuity, Inc., the leading provider of performance management software, today announced that Entuity's Eye of the Storm(R) application now integrates with Micromuse's Netcool(R) suite to provide enhanced combined realtime fault and performance management capabilities. Eye of the Storm was certified Netcool Ready under the Micromuse Developers Alliance(TM) Program.

"Companies require better visibility into network operations, which means an ability to gain a consolidated view of all their management systems," said Corey Ferengul, Senior Program Director with META Group. "When vendors combine their technology with strong out-of-the-box integration - thereby simplifying the clients job and increasing their likelihood of success - everyone wins."

The combination of Eye of the Storm and the Netcool suite allows network operators to proactively manage the quality and availability of network-based services. Utilizing Micromuse's Netcool Software Developers Kit(TM) (Netcool SDK), Entuity has integrated its Eye of the Storm software with the Netcool suite to send performance degradation events and network utilization information to the Netcool console, warning operators of potential problems.

Eye of the Storm's network degradation information, coupled with the Netcool suite's realtime fault data, helps operators isolate and resolve problems before network-based services are adversely impacted. Network operators can also link back to Eye of the Storm and drill down to event details in greater depth, and analyze historical performance to the port level to isolate degradation problems.

"A rapid network evolution has fast outpaced traditional management tools and approaches, a situation made worse by the lack of skilled personnel," said Barbara Harrison, Entuity's Vice President of Marketing. "Only a cooperative strategy can yield the end-to-end proactive solutions so desperately needed in a multi-vendor environment. In Micromuse, we have found a partner with a shared view of the future and an equal commitment to continued innovation."

"Being able to predict network availability and slow-downs is one of the critical facets to meeting pre-defined service-level agreements," said Rosemary Hill, Global Director, Micromuse Developers Alliance. "We are delighted that Entuity's Eye of the Storm application is now Netcool Ready. The combination of network fault and performance data will make it easier for service providers to proactively manage service quality."

The Micromuse Developers Alliance provides Micromuse and its alliance members with the resources to cooperatively pursue business, technical and marketing opportunities. Already a significant number of vendors have expressed interest in Micromuse's Developers Alliance Program to develop and provide off-the-shelf integrated solutions for mutual customers. Toward that end, Micromuse actively enlists best-in-class solutions providers offering applications complementary to Netcool. Micromuse provides its approved Netcool Ready partners with the Netcool SDK. Provided in CD-ROM format, the Netcool SDK provides the tools necessary to develop Netcool Probes, Gateways and Data Source Adapters.

About Eye of the Storm

Eye of the Storm is an out-of-the-box, intelligent software solution that proactively assesses and controls network degradation in real-time, identifying and categorizing problems by severity.

About the Netcool Suite

Micromuse's Netcool software suite collects management data from more than 250 management environments and network devices, including voice, data and Internet. Fault data is rapidly processed and filtered by the Netcool ObjectServer(TM), an in-memory database. The Netcool application allows operators to build views of service availability in realtime, helping them manage networks more efficiently. Because it is scalable and deploys rapidly, the Netcool business model allows service providers to expand their networks as their markets grow.

Availability

Entuity's Netcool Integration Module is available immediately available directly from Entuity by calling 1-800-926-5889.

About Entuity Inc.

Entuity, Inc. is a technology pioneer in developing proactive performance management solutions for the networks of today and tomorrow. The current flagship product - Eye of the Storm - is an intelligent out-of-the-box solution that tracks network technology, translates it into performance efficiencies and transfers the knowledge, allowing problems to be solved before they result in loss. The company was founded by network experts with solid experience in managing global networks. Offices are located in New York, Boston and London. For additional information, please go to www.entuity.com or call 1-800-926-5889

About Micromuse

Micromuse Inc. (Nasdaq: MUSE) is the leading provider of fault and service-level management software. Micromuse was named one of the Top 25 Best Performers in the Wall Street Journal's Shareholder Scoreboard and has recently been recognized in the Forbes 500, Bloomberg's Top 100 Stocks, the Barron's 500 and San Francisco Chronicle 500. Micromuse customers include AirTouch, AT&T, BT, Cable & Wireless, Cellular One, Charles Schwab, Deutsche Telekom, Digex, EarthLink, GTE, ITC^DeltaCom, MCI Worldcom, NextLink, PSINet and a number of financial investment concerns. Headquarters are located at 139 Townsend Street, San Francisco, Calif. 94107; [phone]. The Web site is at www.micromuse.com

Netcool is a registered trademark of Micromuse. All other trademarks and registered trademarks in this document are the properties of their respective owners. Any statements contained in this press release that do not describe historical facts may constitute forward- looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Any forward-looking statements contained herein are based on current expectations, but are subject to a number of risks and uncertainties.

The factors that could cause actual future results to differ materially from the forward-looking statements include the following: fluctuations in customer demand, the Company's ability to manage its growth (including the ability to hire sufficient sales and technical personnel), the risks associated with the expansion of the Company's distribution channels, the risk of new product introductions and customer acceptance of new products; the rapid technological change which characterizes the Company's markets, the risks associated with competition, the risks associated with international sales as the Company expands its markets, and the ability of the Company to compete successfully in the future, as well as other risks identified in the Company's Securities and Exchange Commission Filings, including but not limited to those appearing under the caption "Risk Factors" in the Company's most recent Quarterly Reports on Form 10-Q and on Form 10-K on file with the Securities and Exchange Commission and available on the Company's Web site.