MatrixOne and Imag Australia to Co-host Inaugural MatrixOne Customer Conference and Aerospace & Defence Forum

MatrixOne Inc. (NASDAQ: MONEE), a leading provider of
collaborative product lifecycle management (PLM) solutions for the
value chain(TM) and Imag Australia, a distributor of MatrixOne
products in Australia and New Zealand, have announced that they will
be co-hosting the MatrixOne Australian Aerospace and Defence Forum and
the Inaugural MatrixOne Australian & New Zealand Customer Conference.
   These events will be held at the Novotel, Brisbane in Brisbane,
Australia on September 15-16, 2005.
   The Aerospace and Defence Forum will be held on Thursday the 15th
and will feature presentations from MatrixOne customers including
Boeing Australia and Tenix Defence. Mike Adami-Sampson, MatrixOne's
vice president of product strategy, will deliver a presentation on
MatrixOne's Aerospace and Defence roadmap.
   The Customer Conference, which is open to all customers, will be
held on Friday the 16th. It will feature success stories from
customers such as Keppel Offshore and Marine, discussions on what's
new in the latest version of MatrixOne's PLM platform--Matrix 10.6,
product roadmap strategies and tips on how to get more from your
MatrixOne installation.
   Both the Aerospace and Defence Forum and the MatrixOne Customer
Conference will include a panel discussion, chaired by Mike
Adami-Sampson, which will give attendees a chance to hear from Imag
Australia and MatrixOne Singapore product specialists.
   For additional information on these events, including the full
agendas and registration forms, please visit
http://www.matrixone.com/matrixone/events.html

   About Imag Australia

   Imag Australia Pty Ltd (http://www.imag.com.au) was established in
1992 and in 2000 became a Solution Provider for the MatrixOne(R) PLM
(Product Lifecycle Management) software suite from MatrixOne(R).
   Specialising in Design Technology and providing Information
Technology Solutions and Information/Knowledge management, to the
Australian and New Zealand market, Imag Australia is also experienced
in Process Modeling & Optimisation, System Integrations, System &
Business Audits, Implementation, Technology Transfer, Consulting and
Training services.

   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.