For more information contact:
John Patoskie
Recursion Software, Inc.
(mailto:info@recursionsw.com)info@recursionsw.com

FOR IMMEDIATE RELEASE

RECURSION’S C++ (TOOLKITS) CERTIFIED ON VXWORKS REAL-TIME OPERATING SYSTEM
Expanded platform support and robust code increases developer options in
working with embedded systems.

DALLAS, TX (April 28, 2003) ^ Recursion Software, Inc., a global provider
of software development solutions, announced today the expanded support of
C++ (ToolKits)’ 3.0 to include certification on the Wind River Systems,
Inc. (NASDAQ: WIND) VxWorks(R) real-time operating system (RTOS), a major
enhancement of its already extensive feature design. The latest C++
release is the most powerful and flexible library to date.

By supporting the Standards (ToolKit), Foundations (ToolKit), and Web
(ToolKit) for the VxWorks RTOS, we enable our customers to utilize our
classes on real-time, embedded systems, leveraging the portability of the
C++ (ToolKits) into the embedded market. Already running on numerous UNIX
platforms as well as Microsoft .NET, extending our cross-platform support
to Wind River’s VxWorks platform is the most recent unfolding of a natural
progression.

“With our latest C++ release certified on VxWorks RTOS, we believe that we
have once again demonstrated our commitment to increasing the breadth and
scope of our software development tools,” said Paul A. Lipari, President
and CEO of Recursion. “Developers will find improved design and higher
performance for multithreaded distributed applications in this version.0/00

The latest version of the C++ (ToolKits) will allow Wind River customers to
develop embedded systems with greater efficiency and produce more robust
code. The flexible design and reliable multithreading are defining
characteristics of Recursion’s C++ (ToolKits).

About Recursion Software, Inc.
Founded in 2001, Recursion Software, Inc. provides software engineers with
powerful enterprise software development solutions for constructing
distributed computing systems with proven Java-based methods. Recursion
Software products allow Java, C++, and C# developers to be productive
quickly by leveraging expertise in object-oriented techniques and
incorporating industry standards. Recursion Software’s customer base
includes Raytheon, EMC, Goldman Sachs, Hewlett Packard, Oracle,
Countrywide, and Sprint, as well as hundreds of other well-respected
organizations. Recursion Software is headquartered in Frisco, Texas.

To learn more about Recursion Software go to (http://www.recursionsw.com/).