MatrixOne's Industry-Leading Semiconductor Design Management Solution Adds New Capabilities for Collaborative Design of Semicond

   MatrixOne's Synchronicity Developer Suite V4.2 Provides Enhanced
Support for System-on-Chip Development, Data-Driven Project
Management, and Integrations with Leading EDA Design Tools and Open
Source Platform Support

   MatrixOne, Inc. (NASDAQ: MONEE), a leading provider of
collaborative product lifecycle management (PLM) solutions for the
value chain(TM), today announced the availability of the newest
version of MatrixOne's Synchronicity(R) Developer Suite(TM) solution.
Developer Suite - already in use at 12 of the top 15 semiconductor
companies - provides an advanced design data management environment
that enables global, multi-site development that can lower cycle
times, increase quality and improve a semiconductor organization's
return on product development.
   Developer Suite Version 4.2 provides designers with improved
performance and support for the industry's broadest range of EDA
applications and operating platforms. It includes new versions of
MatrixOne's Synchronicity DesignSync(R), MatrixOne's semiconductor
design data management platform, and MatrixOne's Synchronicity
ProjectSync(R), a project communication and collaboration management
solution. The optional MatrixOne's Hierarchical Configuration
Manager(TM) provides the industry's only true block-based data
management capability enabling hierarchical system-on-chip (SoC)
design and reuse.
   "The size and complexity of new semiconductor products--such as
the chips driving the next generation of automobiles, digital music
and personal communications--and the speed at which they must be
developed are changing the way that designs and design collaboration
are being done," said John Fleming, senior vice president and general
manager of MatrixOne's electronics business unit. "These are no longer
monolithic projects. They must be divided into multiple sub-projects,
each of these actually a large complex project onto itself. The new
Developer Suite capabilities enable semiconductor companies to take
advantage of global economies of scale and collaborative partnerships
to change the way they bring these products to market, through a
highly-collaborative process that involves their entire value chain
located around the world."

   Managing Complexity in Semiconductor Design

   The creation of semiconductor products is an increasingly complex
process, with design size growing significantly, while development
cycles are continually shortening. To develop such products as rapidly
as possible at the lowest cost requires tight synchronization between
widely-dispersed teams spread across countries, time zones and even
companies. In such a complex environment, a single miscommunication or
data configuration error can cause a huge loss in time and money.
   Developer Suite with HCM lets designers define the hierarchical
relationships between design components and provides a simple,
powerful interface to work on the entire design hierarchy. This
innovative, systems-based methodology helps minimize costly,
hard-to-detect mistakes that can occur when engineers are managing
each block's design data and can tremendously shorten and reduce the
number of design cycles. Designers, chip architects, and project
managers can ensure their actions done on a single design block are
within the context of the entire design hierarchy to dramatically
simplify the implementation of large SoC designs.
   Significant enhancements to Developer Suite Version 4.2 include
the following:

   --  Next-generation DesignSync User Interface: Version 4.2
        includes a next-generation interface with new tools to access
        the capabilities of the HCM to create an intuitive,
        hierarchical file structure for very large systems on chips
        designs.

   --  Broad EDA interoperability: MatrixOne is the only
        semiconductor design data management provider that offers
        production-level integrations to multiple data formats from
        any EDA tool--even home-grown proprietary tools. Version 4.2
        now supports the latest four releases of Cadence(R)
        OpenAccess, Cadence CDBA, and the latest three releases of
        Synopsis(R) Milkyway(TM) database.

   --  Tighter integration to data driven enterprise project
        management: Version 4.2 enhances the integration to
        MatrixOne's Program Central(TM) application, which enables
        events changing in DesignSync to update a project manager's
        dashboard automatically. For example, by tagging a design "sim
        passed," the Simulation task will be automatically marked
        complete in their project status reporting tool, providing
        visibility for all project team members.

   --  Higher-Performing DesignSync: Enhancements to tagging and
        introduction of additional multi-threaded processing provide
        greater scalability and increased performance.

   --  Industry's broadest platform support: The Developer Suite
        continues to be supported on all major platforms including
        Solaris(TM), HP-UX(TM), Windows(R), and Red Hat(TM) Linux(TM)
        including Red Hat Enterprise Linux (RHEL). Version 4.2 now
        includes support for Solaris 10 and leading open source
        platforms including RHEL 4 and SuSE(TM) 9.

   Pricing and Availability

   Developer Suite V4.2 is available now and is priced from $4500 per
user depending on configuration. Existing users of ProjectSync,
DesignSync, DesignSync DFII and HCM with active maintenance contracts
can learn more and upgrade for free by visiting the MatrixOne
Synchronicity Customer Information Center
http://Support.MatrixOne.com/

   About MatrixOne

   MatrixOne, Inc. (NASDAQ: MONEE), a leading global provider of
collaborative product lifecycle management (PLM) software and
services, enables companies to accelerate product innovation to
achieve top line revenue growth and improve bottom line profitability.
With world-class PLM solutions and a commitment to customer success,
MatrixOne is focused on helping companies across the automotive,
aerospace & defense, consumer, machinery, medical device,
semiconductor and high-tech industries solve their most challenging
new product development and introduction problems. More than 800
companies use MatrixOne's solutions to drive business value and gain a
competitive advantage, including industry leaders such as BAE Systems,
Bosch, Comau, General Electric, Honda, Johnson Controls, Linde AG,
NCR, Nokia, Philips, Porsche, Procter & Gamble, Sony Ericsson,
STMicroelectronics and Toshiba. MatrixOne (www.matrixone.com) is
headquartered in Westford, Massachusetts, with locations throughout
North America, Europe and Asia-Pacific.

   MatrixOne, the MatrixOne logo, Synchronicity, Design Sync and
Project Sync are registered trademarks and "a leading provider of
collaborative product lifecycle management (PLM) solutions for the
value chain" Developer Suite, and Hierarchical Configuration Manager,
are trademarks 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.