For Immediate Release

Metrowerks Ships New Release of CodeWarrior for Mac OS

Release 5 Supports Mac OS X and Rapid Application Development for Java on
Mac OS

Austin, Texas-July 1, 1999-Metrowerks Inc., (Nasdaq: MTWK, TSE: MWK) a
leading provider of software development tools for telecom, desktop,
embedded systems, and consumer electronics, today announced Release 5 of
CodeWarrior for Mac OS, Professional Edition began shipping to customers
this week.

With Release 5, Metrowerks provides support for Mac OS X and Carbon
programming, more extensive support for the AltiVec processor, improved
optimizations, XML support, and a significant new Rapid Application
Development (RAD) layer to the CodeWarrior Development Environment.

"CodeWarrior for Mac OS, Professional Edition, Release 5 is the toolset
of choice for development for Apple's iMac and G3 Internet-ready
platforms," said Greg Galanos, president and chief technology officer,
Metrowerks. "CodeWarrior now includes a new design layer to support RAD
for a wide range of Java-based technologies, providing the easy-to-use,
forms based programming also found in Visual Basic for Internet
programming. We've also added significant performance improvements to
our C and C++ compiler technologies for desktop engineering.
Professional developers now have a wide range of tools that allow them to
target either the desktop or the Internet from one powerful,
cross-platform development environment. Projects developed with
CodeWarrior for Mac OS are compatible and portable to versions of
CodeWarrior available on Windows, Solaris and Linux. No other development
environment offers such mobility and efficiency in targeting and
developing for a wide range of Internet-enabled platforms."

Java Support for RAD and KL Group's JavaBeans

CodeWarrior for Mac OS, Professional Edition, Release 5 introduces RAD
tools for Java including wizards (helpers) for Java applet, application
and bean development. The Java RAD tools provide developers with a
graphical layout editor that builds their Java program's graphical user
interface (GUI) using fast, click-and-drop technology.

As announced on June 23, Release 5 of the Professional editions for both
CodeWarrior for Mac OS and CodeWarrior for Windows bundle KL Group's
JClass Java Lite components with CodeWarrior. KL Group's JavaBeans added
to CodeWarrior give developers versatile tools that enhance the look and
functionality of their user interfaces, and provides the only truly
integrated development tool suite for multiple language and multiple
platform development. Developers can easily build powerful grid and
charting functionality into their applications, all from the CodeWarrior
IDE.

MAC OS X Support

CodeWarrior for Mac OS, Release 5 allows developers to easily target
their existing applications to Mac OS X. Support for prerelease Mac OS X
is included in CodeWarrior's compilers, linkers, Integrated Debugger and
libraries.

Carbon Support

Carbon is a set of APIs that enable Mac OS source code to be compiled for
both Mac OS 8.x and Mac OS X. Metrowerks fully supports Carbon in
CodeWarrior for Mac OS, Release 5. Included in this support are the
following features:

- Metrowerks Standard Libraries (MSL) are updated for Carbon to permit
writing console applications that use SIOUX window.

- Certain runtime libraries have been Carbonized

- The ProfilerLib has been Carbonized to provide the ability to tune the
performance of Carbon applications on Mac OS.

- CodeWarrior's PowerPlant framework has been Carbonized. Release 5
includes some sample projects that can be built and run on either
operating system.

- Debugging capability for applications that have been ported to Carbon

Greater IDE Extensibility

Release 5 provides an IDE with increased extensibility and customization
options. These include XML import/export and customization of many of
the CodeWarrior IDE user interface elements. The CodeWarrior APIs have
been greatly enhanced to allow developers to write plug-ins to both
extend the user interface and automate the IDE. Also included in Release
5 is support for Perl scripting, and the ability to debug applications
across networked computers.

Pricing and Availability

CodeWarrior for Mac OS, Professional Edition, Release 5 is priced at
US$449MSRP in the United States, and is available from Metrowerks and
Metrowerks authorized resellers. To order, please visit the Metrowerks
website at www.metrowerks.com, telephone Metrowerks at 800-377-5416, or
email sales@metrowerks.com. For pricing and availability outside the USA
and Canada, please email intlsls@metrowerks.com. Distributors and
resellers are listed on www.metrowerks.com/buy.

About Metrowerks

Founded in 1985, Metrowerks (NASDAQ: MTWK, TSE/ME:MWK) develops, markets
and supports CodeWarrior software development solutions for a number of
operating systems targeting the most popular microprocessors. Intended
for use for embedded systems or desktop computers, the cross-platform
compilers support C, C++ and Java, and allow programmers to build
applications from one unique Integrated Development Environment (IDE).
Metrowerks' CodeWarrior products are used by more than 200,000 registered
users in 80 countries.