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Collaborative Product Deploys Linux(r) Applications in Enterprise-Class
Launch to Follow Proposed Acquisition - Developers to Get Early Access

CeBIT, Hanover, Germany-March 26, 2001-Caldera Systems, Inc. (Nasdaq:
and The Santa Cruz Operation, Inc. (SCO) (Nasdaq: SCOC) today announced
forthcoming release of Open UNIX 8. By incorporating the Linux Kernel
Personality (LKP) technology into the next release of the UnixWare(r) 7
kernel, Open UNIX 8 will enable Linux applications to be deployed on top
the powerful and highly scalable UNIX kernel. Caldera will become the
of the UNIX kernel when the acquisition of the SCO Server Software
is completed as estimated in the second calendar quarter of 2001.

Open UNIX 8 will maintain compatibility and continuity with the UnixWare
operating system while providing a complete Linux environment. In
the product will incorporate support for the execution of unmodified
Intel(r) Architecture binaries, giving users, resellers and ISVs the
best of
both UNIX and Linux technologies. The result is transparent execution of
Open UNIX 8 (or UnixWare 7) applications and most Linux applications,
will run without modification or recompilation.

"Open UNIX 8 is the first step in implementing the vision of the pending
company," said Ransom Love, president and CEO of Caldera Systems. "It
combines the heritage of UNIX with the momentum of Linux, and will be
premiere product for data intensive applications like database, email
supply chain management. The incorporation of the Linux application
into the UnixWare kernel essentially redefines the direction of the
and motivates a new brand identity - Open UNIX."

"If you need to run a Linux application in a data center environment,
UNIX 8 will fill the bill with the highest standard of reliability and
scalability," said Dave McCrabb, president of the SCO Server Software
Division. "We are 'unifying UNIX with Linux for Business' and this
is a major proof point."

"One of the strengths of UNIX is its ability to provide
data intensive applications," said Bill Claybrook, research director for
Linux and UNIX of Aberdeen Group. "Open UNIX 8 is positioned to play a
significant role in bridging the gap to Linux implementation in a data
center environment."

The LKP technology in Open UNIX 8 will include the same GNU tools and
libraries built into Caldera OpenLinux(tm), which were developed with
adherence to the specifications of the proposed Linux Standards Base
Open UNIX 8 will track this developing standard, assuring the highest
of application compatibility.

Open UNIX 8 will be demonstrated at Caldera's booth at CeBIT in Hanover,
Germany, March 22-28, Hall 3 Stand C45. An Early Availability Program is
place to supply selected partners with LKP technology previews based on
UnixWare 7.1.1 systems. In April, Caldera and the SCO Server Software
Division will begin distributing Open UNIX 8.0 beta versions to a broad
of partners.

The product is targeted to be available mid-year and will include
enhancements and refinements to the UNIX platform, representing an
additional value for existing UnixWare 7 customers. Open UNIX 8 will be
available to UnixWare 7 customers as a system upgrade.

For more information about Caldera Systems' and SCO's products and
please visit and

Caldera Systems, Inc.
Founded in 1998 by Ransom Love, Caldera Systems (Nasdaq: CALD) is a
for Business" leader. Caldera specializes in the development, deployment
management of Linux-based clients and servers. Based in Orem, UT,
has offices and 1000+ resellers worldwide.

The Santa Cruz Operation, Inc.
With headquarters in Santa Cruz, CA, The Santa Cruz Operation, Inc. is
comprised of three independent divisions -- Tarantella, Inc., the Server
Software Division, and the Professional Services Division. The Server
Software Division is a leading provider of UNIX server operating
Tarantella, Inc. promotes a range of software technologies and products
web-enable any application instantly, for access by users anywhere. The
Professional Services Division helps organizations create and deploy
personalized IT strategies. The three divisions sell and support their
products and services through a worldwide network of distributors,
resellers, systems integrators and OEMs.
Caldera is a registered trademark of Caldera Systems, Inc. All other
products, services, companies, events and publications are trademarks,
registered trademarks or servicemarks of their respective owners in the
and/or other countries.

The Santa Cruz Operation, SCO, UnixWare and Tarantella are trademarks or
registered trademarks of The Santa Cruz Operation, Inc. in the USA and

LINUX is a registered trademark of Linus Torvalds.
UNIX is a registered trademark of The Open Group in the United States
other countries.

Forward Looking Statements
The statements set forth above include forward-looking statements,
statements relating to the pending sale of SCO's Server Software and
Professional Services divisions to Caldera Systems, Inc., that involve
and uncertainties. Caldera and SCO ("the Companies") wish to advise
and investors that a number of important factors could cause actual
to differ materially from those in the forward-looking statements.
factors include SCO and Caldera shareholders not approving the
conditions to the merger not being satisfied or waived, the failure of
products described above to operate as designed due to incompatibility
some platforms or other defects; the Companies' reliance on developers
the open source community; new and changing technologies and customer
acceptance of those technologies; the Companies' ability to compete
effectively with other companies; failure of the Companies' brands to
achieve the broad recognition necessary to succeed; unenforceability of
GNU general public license; the Companies' reliance on third party
developers of components of their software offerings; claims of
of third-party intellectual property rights; and disruption in the
Companies' distribution sales channel. These and other factors, which
cause actual results to differ materially, are also discussed in the
Companies' filings with the Securities and Exchange Commission,
their recent filings on Form 10-Q.

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