Mercator Selected by Brown Brothers Harriman Infomediary to Link Investment Managers to Service Providers and Facilitate Straight Through Processing.

Business Editors

WILTON, Conn.--(BUSINESS WIRE)--March 26, 2002

Mercator(R) Software, Inc. (Nasdaq: MCTR), today announced that it is working with Brown Brothers Harriman (BBH) to package SWIFT ISO 15022 message standards into a broader communications offering. ISO 15022 messaging facilitates the straight through processing (STP) of trades and settlement from the beginning to the end of the transaction process.

BBH, one of the world's leading global custodians, converted successfully to the ISO 15022 standard in 2001 using Mercator. Through its Infomediary solution, BBH assists Investment Managers with communications flows across multiple service providers. BBH's Infomediary technology incorporates Mercator Integration Broker as a foundation component to which BBH has added a library of ISITC and proprietary data maps.

BBH's Infomediary offerings facilitate internal and external workflow integration among software applications, business units, and service providers. With Infomediary, Investment Managers can pursue strategies to outsource middle- and back-office activities selectively to multiple service providers. It also enables Investment Managers to integrate efficiently with third party custodians and market infrastructures.

Mercator Integration Broker is a robust ISO 15022 solution that fit BBH Infomediary's architectural requirements. Mercator's open technology architecture permits easier integration into the Infomediary system.

Taylor Bodman, BBH partner and CEO of BBH Infomediary, commented: "In developing a solution that would work for Investment Managers beyond their conventional business with BBH, Mercator dramatically improved our time-to-market. As a consequence, we have been able to focus our time on areas where we have specific and differentiating subject matter expertise."

Robert J. Farrell, president of Mercator Americas, commented: "Mercator has helped numerous financial organizations with ISO 15022 messaging. In the case of BBH Infomediary our track record gave them the confidence to build on our technology for follow-on applications."

About Mercator

Mercator Software's intelligent business integration solutions unify any internal operations and connect them with partners and customers while leveraging current technology investments. Over 7,000 businesses, including more than 1,100 enterprise customers in financial services, healthcare, utilities, manufacturing, retail, and distribution, use Mercator software to maximize their performance. Additional information about Mercator (Nasdaq: MCTR) may be found at www.mercator.com.

About BBH Infomediary

BBH Infomediary was established in February 2001 as a virtual alternative to traditional "lift out" outsourcing. BBH's modular, flexible and scalable Infomediary technology solutions are designed to automate or eliminate many of the activities that are "pain points" in today's securities transaction processing environment. For example, Infomediary helps its clients to manage multi-bank communications with SWIFT and non-SWIFT counterparties; improve Straight Through Processing; connect to Virtual Matching Utilities; and aggregate data across internal and external sources. For more information on BBH's Infomediary platform, please visit www.bbhinfomediary.com.

About BBH

A global leader with 180 years of experience, Brown Brothers Harriman (BBH) helps many of the world's most sophisticated mutual funds, investment managers, banks and insurance companies achieve their international business objectives. BBH provides specialist services and innovative solutions to clients in over 100 markets for custody, accounting, administration, securities lending, foreign exchange, and brokerage services. Combining entrepreneurial thinking, innovative technology, and unmatched client service, BBH is consistently ranked among the world's top global custodians and maintains a presence in each of the principal financial centers around the globe. For more information on BBH's unique integrated approach, please visit www.bbh.com.

Mercator is a registered trademark of Mercator Software, Inc.

Legal Notice Regarding Forward-Looking Statements

Statements in this press release that are not purely historical are forward-looking statements, including statements regarding Mercator Software's beliefs, expectations, hopes or intentions regarding the future. Forward-looking statements in this release include, but are not limited to, statements regarding the growth of the enterprise application market, the demand for the company's application integration solutions and the speed of deployment of new products, including combined Mercator e-business integration broker products. It is important to note that actual outcomes and the company's actual results could differ materially from those in such forward-looking statements. Factors that could cause actual results to differ materially include risks and uncertainties such as changes in demand for application integration or e-business integration software and the company's Mercator e-business integration broker suite of products in particular, the ability of the company to expand its international operations, the ability of the company to manage expanded global operations, the ability of the company to continue to add resellers and other distribution channels, and the success of third parties in utilizing and marketing the company's products, the Company's ability to raise financing, or seasonality in operating results. Readers should also refer to the risk disclosures outlined in the company's reports filed with the Securities and Exchange Commission. All forward-looking statements and reasons why results might differ included in this release are made as of the date hereof, based on information available to the company as of the date hereof, and the company assumes no obligation to update any such forward-looking statement or reasons why results might differ.