SCO STRENGTHENS WINDOWS FRIENDLY STRATEGY WITH MAINSOFT DEVELOPMENT TOOLS

WILL BE FIRST SINGLE SET OF TOOLS FOR DEVELOPING AND MAINTAINING
APPLICATIONS THAT INTEGRATE WINDOWS CLIENTS AND UNIX SERVERS

SANTA CRUZ, CA/ SCO Forum95 (August 21, 1995) - (NASDAQ:SCOC) In a
strategic move that further strengthens its Windows Friendly strategy for
business critical servers, SCO today announced that Mainsoft Corporation
has agreed to provide its suite of 32-bit Windows development tools on SCO
OpenServer Release 5, the next-generation business critical server. The
products to be ported include Mainwin XDE, Mainwin Test, and Visual
SourceSafe for UNIX, marketed as Mainwin Studio. This suite of products
will provide developers with a single set of key tools to develop, deploy,
and maintain business- critical client/server applications across Windows
desktops and UNIX servers. The Mainsoft products will be available to SCO
customers by the end of calendar year 1995, and will be supported by a
variety of joint marketing programs.

Scott McGregor, SCO's senior vice president, products, said, "This is a
significant step forward in enabling developers to seamlessly integrate
Windows desktops with SCO business critical servers.. We selected Mainsoft
because of their demonstrated technology leadership providing Windows
32-bit development tools for UNIX. "In the past, SCO developers had to
maintain different APIs and tools to develop client/server applications
across Windows and UNIX Systems. With Mainwin Studio for SCO OpenServer
Release 5, developers will have a single API and set of tools to develop,
deploy and maintain their client/server applications across multiple
platforms. This is expected to save a significant amount of time and money
in developing business-critical applications.

Jeff Elpern, president of Mainsoft Corporation, said, "Our relationship
with SCO complements our currently supported UNIX platforms. SCO is the
leading provider of business critical servers, and now with Mainwin Studio
they have the world-class tools necessary to make UNIX-to-Windows
integration a reality. We believe that the presence of the Windows API on
the UNIX server as well as on the PC client is key to success in the
client/server market."

The entire Mainwin Studio development environment will be available for SCO
OpenServer Release 5, including:

Mainwin XDE - a full-featured, multi-platform library that provides the
Windows API to programs in UNIX System and X Window Systems environments,
including the MFC (Microsoft Foundation Class) application framework and
other future Microsoft technologies, such as OLE (Object Linking and
Embedding) technology;

Mainwin Test - An automated software tool, based on Microsoft Test, for
testing Microsoft Windows applications, which allows re-use of original
Microsoft Test scripts;

Visual SourceSafe for UNIX - A source-code management system for the
Windows development environment, based on Microsoft SourceSafe.

About Mainsoft

Mainsoft Corporation offers Windows software developers the most
cost-effective environment for cross-platform development, Mainwin Studio.
Via its core technology product, Mainwin XDE, developers can extend
applications written to the Windows API into the UNIX market. Mainsoft
also offers a growing set of complementary cross-platform development
tools to help developers leverage their development efforts into multiple
markets. Mainsoft headquarters is located at 1270 Oakmead Parkway, Suite
310, Sunnyvale, CA 94086. To contact Mainsoft, call (408) 774-3400, fax
(408) 774-3404, e-mail info@mainsoft.com, or access the World Wide Web at
http://www.mainsoft.com.

About SCO

SCO is the world's leading provider of UNIX server and host systems, with
more unit shipments in 1994 than Sunsoft's Solaris 1 and 2, IBM's AIX,
HP's HP-UX, and Novell's UnixWare combined (source: IDC, most current data
as of 12/94). SCO Business Critical Servers run the critical day-to-day
operations of large branch organizations in retail, finance, and
government, as well as corporate departments and small to medium-sized
businesses of every kind. SCO is also the leading provider of software
that integrates Windows PCs and other clients with servers from all of the
major UNIX System vendors. SCO sells and supports its products through a
worldwide network of distributors, resellers, systems integrators, and
OEMs.
 
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