Graphisoft acquires Drawbase Software

Drawbase’s CAFM Expertise Will Deliver ArchiFM to US Market

San Francisco, CA/Budapest, Hungary – April 3, 2000 – Graphisoft announced today that it
has acquired Drawbase Software, a computer-aided facilities management (CAFM) software
and services provider, for a purchase price of close to $2 million. Drawbase, based in
Newton, Mass., will operate as a wholly-owned subsidiary of Graphisoft U.S. Inc.

Drawbase’s CAFM solutions, employed internationally in the healthcare, financial, real estate,
architectural, educational, communications and government sectors, will be complemented by
Graphisoft’s ArchiFM™ 2000. Based on Archicad® and the Virtual Building™ concept,
Graphisoft’s new facilities management tool is currently available in Europe and is scheduled
for release in the United States later this year.

“As we continue to develop Virtual Building technologies that link all aspects of a building’s
lifecycle, CAFM is a priority,” says Graphisoft U.S. Inc. President Tamás Hajas. “With
Graphisoft’s Archicad technology at the core, we’ll speed the migration of CAFM from 2D to
3D and to object and Web-based solutions.”

“With the proliferation of project websites, we expect the number of architects who offer
facilities management services to grow both as a result of the Internet’s influence and in
response to customer demand. With an Archicad-based FM solution, we’ll be ideally
positioned to serve a much larger architectural CAFM market. At the same time, we’ll be able
to provide our customers and prospects with a wider range of solutions,” states Drawbase
President Al Moulton.

The purchase price includes performance-dependent components, the attainment of which
cannot be guaranteed by either party.

About Drawbase Software (www.drawbase.com)

Drawbase is a leading supplier of CAD and CAFM software tools. With more than 18,000
licenses worldwide, companies of all sizes from Fortune 500 corporations to small businesses
employ Drawbase. Drawbase offers powerful, integrated layout and design tools, complete
reporting and database record keeping, enabling the utilization of existing CAD database
information. The Drawbase solution for gathering, analyzing, and disseminating information
has significantly improved business performance for a host of corporations and institutions
worldwide – World Bank, Nortel Networks, Inc., BankBoston, Raytheon, General Dynamics
Government Systems and Cabot Corporation.

Graphisoft is a leading provider of computer-aided design (CAD) software solutions for the
architectural profession and the building industry. Founded in 1982, Graphisoft is ranked
today among the largest AEC CAD software developers in the world, with 12 offices all over
the world in addition to its headquarters. Graphisoft’s flagship product, Archicad, is used by
more than 75,000 architects worldwide and distributed in 25 languages and 80 countries.
Shares of Graphisoft are traded on the Frankfurt Stock Exchange Neuer Markt under the
symbol GPH. More information about Graphisoft is available at www.graphisoft.com.