MatrixOne Positioned as a Leader in the PLM Market in Recent
Industry Report

Westford, Mass., July 28, 2005 - MatrixOne, Inc. (NASDAQ: MONEE), a leading provider of collaborative product lifecycle management (PLM) solutions for the value chain , today announced that it has received high marks in four of the five categories examined in a recent report by AMR Research, entitled "The CIO's Guide to the PERFECT Product Launch: Translating Innovation to Business Benefit."

AMR Research reviewed the top 18 PLM vendors worldwide to examine why product launches can fail and what can be done to give companies a better chance at success. Within the report, AMR ranked the capabilities of these 18 PLM vendors in five major categories: Collaborative Product Design, Product Data Management, Product Portfolio Management, Direct Material Sourcing and Customer Needs Management.

MatrixOne was one of only three vendors to receive the highest ranking in one of the most critical areas for a perfect product launch-customer needs management. The goal of customer needs management is to link all the stakeholders in the product development process and provide them with an enterprise wide view of customer needs and product requirements, resulting in products that are developed more closely in line with the customer's wishes. In fact, according to the AMR report, 46% of product failures can be attributed directly to the product not meeting customer needs.

In addition, MatrixOne was one of only four vendors to be awarded the highest ranking in the area of product data management, and was also given high marks in product portfolio management and direct material sourcing. Clients across several industries are using the MatrixOne PLM platform to help speed the delivery of new product innovations, while reducing development costs and allowing better visibility and control over strategic product development decisions. Because of its abilities, the MatrixOne PLM platform is enabling these companies to increase the potential return on their new products.

"We believe that this ranking is a clear validation of our ability to enable our clients to successfully collaborate, design, develop and launch their innovations to the market," said Mark F. O'Connell, president and CEO of MatrixOne, Inc. "AMR Research is known as the leading firm for insight into the PLM industry, and we are thrilled to have been recognized by them as one of the leading vendors in this space."

About MatrixOne
MatrixOne, Inc. (NASDAQ: MONEE) is a recognized leader in delivering collaborative Product Lifecycle Management (PLM) solutions. We provide flexible solutions that unleash the creative power of global value chains to inspire innovations and speed them to market. MatrixOne's customers include global leaders in the aerospace and defense, automotive, consumer products, high technology, life sciences, machinery, and the process industries, including Agilent Technologies, General Electric, Honda, Johnson Controls, Philips, Procter & Gamble, Siemens, and Toshiba. MatrixOne (http://www.matrixone.com/) is headquartered in Westford, Massachusetts with locations throughout North America, Europe, and Asia/Pacific.

MatrixOne and the MatrixOne logo are registered trademarks and "a leading provider of collaborative product lifecycle management (PLM) solutions for the value chain" is a trademark of MatrixOne, Inc. All other trademarks and service marks are the property of their respective owners.

Forward-looking statements in this release are subject to risks and uncertainties that could cause our actual results to differ materially from those anticipated. Such statements may relate, among other things, to our plans, objectives and expected financial and operating results. The risks and uncertainties that may affect forward-looking statements include, among others: poor product sales, long sales cycles, difficulty developing new products, difficulty in relationships with vendors and partners, higher risk in international operations, difficulty assimilating future acquisitions, difficulty managing rapid growth, and increased competition. For more about the risks and uncertainties of our business, see our periodic and other S.E.C. filings.