HSF publishing for Pro/ENGINEER files, real-time collaboration highlight
initial release


Oakland, CA - May 03, 2002 - Tech Soft America (TSA), the leading provider
of component graphics technology to the CAD/CAM/CAE industry, today
announced the release of the free Granite™ HOOPS 3D Part Viewer. The viewer
was built using the tightly integrated Granite One modeling kernel from PTC
and the HOOPS 3D Application Framework (HOOPS/3DAF) from TSA. The viewer is
the next step in the integration of Granite and HOOPS announced in February.

Users of Granite based applications such as Pro/ENGINEER®, Pro/DESKTOP®, and
IronCAD may now freely view and navigate their models and assemblies as well
as publish them in the popular HSF streaming format and thereby exchange
visual models with the many other applications supporting the OpenHSF
Initiative. www.openhsf.org.

The Granite HOOPS 3D Part Viewer is intended for personal, non-commercial
use by end-users and may be downloaded from www.hoops3d.com. Major
functionality includes:

Read, view and manipulate parts and assemblies from any Granite based
application
Publish Granite models to the HSF format for streamed web viewing and for
interchange with other applications supporting the OpenHSF Initiative
Save as HTML pages with HSF files and free HOOPS 3D Stream Control embedded.
Navigate even the most complex assembly using HOOPS' level-of-detail and
constant frame-rate capabilities
Query the Granite model and perform distance calculations
Browse the topological hierarchy of the Granite file
Render models in shaded, triangulated, wireframe or hidden-line modes
"The speed with which we were able to rapidly deliver this advanced viewer
is a testament to the usability of these combined components. We are
confident that end-users of Granite based applications such as Pro/ENGINEER,
Pro/DESKTOP, IronCAD and others will appreciate the ability to freely view,
navigate and web publish their files to HSF and participate in the OpenHSF
Initiative to establish a common, open format for engineering visualization.
" Stated Ron Fritz, Managing Partner for TSA.

Brian Shepherd, senior vice president, MCAD Solutions & Technical Marketing,
PTC added, "This sample application is an excellent demonstration of the
combined power of Granite and HOOPS. We're excited to see our relationship
with Tech Soft America add value to current and prospective Granite One
users."

Granite One is an interoperability platform based on the unmatched geometry,
feature and data exchange capabilities at the core of Pro/ENGINEER, PTC's
market leading mechanical computer-aided design software. HOOPS/3dAF
provides a flexible development framework that enables the rapid development
of high-performance design, visualization and engineering applications. The
integration provides a bi-directional, associative bridge between the
Granite One parametric database and HOOPS graphics database. The linking of
these two components allows Granite licensees to leverage the HOOPS
technology to help them more rapidly deliver sophisticated applications.

Developers licensing the Granite One kernel from PTC and HOOPS 3dAF from TSA
will now also receive a source-code level version of the Granite HOOPS Part
Viewer as a sample application to be used as the foundation for their own
unique products. Developers wishing to license the Granite or HOOPS
components for application development or commercial-use publishing of
Granite data into HSF may contact PTC and TSA directly to arrange an
evaluation.

About PTC

PTC (Nasdaq: PMTC) develops, markets, and supports software solutions that
help manufacturers get superior products to market before their competitors.
PTC is the world's largest software company with a total commitment to
product development. The company services more than 32,000 customers
worldwide. Further information on PTC is available at http://www.ptc.com.

About Tech Soft America

Tech Soft America (TSA) provides premier customer driven development tools,
consulting and support services enabling their partners to rapidly deliver
world-class technical software. TSA develops the HOOPS 3D Application
Framework, HOOPS Stream Toolkit and HOOPS Net Server, all components
designed to dramatically simplify the design, development and maintenance of
high-performance, interactive 2D and 3D applications built for PCs, UNIX
workstations, Linux and the Web.

HOOPS technology has been incorporated into over 125 commercial software
applications, from such leaders as SolidWorks, PTC, SDRC, CADKEY, Fluent,
Tecoplan and Mechanical Dynamics.

The company maintains corporate headquarters in Oakland, California and can
be reached at http://www.hoops3d.com.


Tech Soft America Press Contact:
Melle Amade-Vice
510.434.7630 ext. 214
melle@techsoftamerica.com



Except for the historical information contained herein, matters discussed in
this news release may constitute forward-looking statements that involve
risks and uncertainties that could cause actual results to differ materially
from those projected. These risks and uncertainties are detailed from time
to time in reports filed by PTC with the Securities and Exchange Commission,
including PTC's most recent reports on Form 10-K and 10-Q. PTC, The Product
Development Company, Granite, Pro/ENGINEER, Pro/DESKTOP and all PTC product
names and logos are trademarks or registered trademarks of Parametric
Technology Corporation or its subsidiaries in the United States and in other
countries. HOOPS is a registered trademark of Tech Soft. Other brand and
product names are trademarks of their respective owners.

Copyright (c) 2001 Tech Soft America.