SALT LAKE CITY–Oct. 4, 2006–Altiris, Inc. (Nasdaq: ATRS), a pioneer of service-oriented management solutions, today announced that AppStream, a leader in on-demand application deployment, has joined the Altiris® Developer Program. AppStream has optimized its technology to be compatible with Altiris® Software Virtualization Solution™ technology, the combination of which delivers virtualized, on-demand application delivery and management. IT organizations can now use AppStream 5.1 to provide instant delivery and activation of applications virtualized by Altiris® SVS™ software. SVS software eliminates conflicts between applications and does not alter the Windows installation, while AppStream technology provides efficient and flexible streaming to deliver on-demand applications to the desktop. The combination of SVS with AppStream technology offers IT organizations:

*Increased control of software environments

*More efficient service with true on-demand application delivery and software repair

*Flexibility to quickly move users and applications between computers

*Reduced software license costs

*Reduced testing and help desk costs through conflict-free software operations

Streaming is becoming an integral component of the application virtualization market segment which is predicted to grow significantly over the next 12 – 24 months, according to Andi Mann, Enterprise Management Associates senior analyst. Mann said, “Streaming is an instantaneous delivery mechanism that complements software virtualization. Streaming combined with the ability to virtualize applications is a powerful combination for software management and control.”

Other benefits of software virtualization and streaming include rapid application migration and the ability to lockdown desktops while maintaining end-user productivity.

“Software streaming and virtualization are complementary technologies that serve two very different but additive functions to improve software management and the enterprise computing experience,” said Steve Morton, Altiris VP of product management and marketing. “Integrated technologies from Altiris and AppStream solve the most pressing software ownership issues today while setting the stage for the creation of dynamic computing environments.”

Brad Rowland, AppStream VP of worldwide marketing, said, “As virtualization moves to the desktop, we are excited to offer a unique approach with Altiris. Both companies share customer-focused and standards-based design philosophies resulting in award-winning technologies. Together, we offer an even more powerful solution to solve a very real set of problems. This is another step forward in our vision to remove barriers to computing resources and information for enterprise customers.”

Altiris Software Virtualization Solution creates a portable, virtual software package that can be instantly activated and deactivated on an end-user system. Unlike other application virtualization technologies, Altiris technology protects the client operating system, eliminates software conflicts and minimizes support calls while maintaining normal application behavior and end-user experience. Combined with streaming, Altiris software virtualization improves end-user productivity while substantially reducing the daily burden on IT to maintain applications.

AppStream 5.1 provides an on-demand delivery platform for SVS software. Integration between AppStream and SVS technologies provides the latest method to track, monitor and restrict applications from a central location. In addition, software license agreement compliance can now be automated. This integration also simplifies and streamlines patch and software update delivery for IT organizations while making the process seamless for end users.

The Altiris service-oriented management architecture is open for development by Altiris Developer Program partners. AppStream is one of the first to leverage open Altiris APIs to optimize AppStream 5.1 for compatibility with Altiris SVS software.

About AppStream

AppStream, Inc. is a leader in on-demand application deployment and management. By optimizing streaming and virtualization technologies, AppStream offers IT customers the most flexible application management solutions at the most affordable price, with the fastest implementation time. AppStream does this through patented technologies and partnership with industry leaders. AppStream is headquartered in Palo Alto, CA and is backed by leading venture capital firms. For more information, please visit www.appstream.com. About Altiris

Altiris, Inc. is a leading provider of service-oriented management software that enables IT organizations to easily manage, secure and service heterogeneous IT assets. Flexible solutions from Altiris help IT align services to drive business objectives, deliver audit-ready security, automate tasks, and reduce the cost and complexity of management. For more information, visit www.altiris.com. Note on Forward-Looking Statements

This press release contains certain forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934 and Section 27A of the Securities Act of 1933, including the statements regarding streaming becoming integral to application virtualization and predicting the growth of the application virtualization market. These forward-looking statements involve certain risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements, including but not limited to, the inaccurate assessment of, or changes to, market demand or IT technology trends, and such other risks as identified in our Quarterly Report on Form 10-Q for the period ended June 30, 2006, and from time to time in other reports filed by Altiris with the Securities and Exchange Commission.

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