Overstock.com Selects MKS Integrity for Application Lifecycle Management

Waterloo, ON — November 30, 2006: MKS Inc. (TSX:MKX) today announced that popular online retailer Overstock.com® (Nasdaq:OSTK) has selected MKS Integrity for application lifecycle management (ALM).

MKS Integrity offers workflow and change management to facilitate better collaboration and process standardization during software development. Overstock.com plans to deploy MKS Integrity at its Salt Lake City headquarters to help its software developers manage development projects more effectively. Overstock.com will also use MKS Portfolios to deliver real-time metrics, analytics and trending data to aid in software project execution.

“Technology is the backbone of our business, which means project management around systems development must be rock solid,” says Sam Peterson, Senior Vice President, Information Technology, Overstock.com. “MKS’s application lifecycle management platform gives us high levels of project control, process standardization and real time visibility that should help us to squeeze inefficiencies and unnecessary costs out of the development process and enable our development team to focus on innovating.”

“Overstock.com’s development team is on the technology leading edge in the retail sector, connecting software innovation to customer satisfaction on a daily basis. MKS’s single platform solution for ALM is an ideal management platform for cutting edge development shops. Within one system of control teams can collaborate, communicate and respond more quickly to changing market demands. We are pleased to welcome Overstock.com to our swelling ranks of retail clientele including such well known names as Barnes & Noble, The Dressbarn, Timberland and Tiffany’s,” says Michael Harris, MKS President and COO.

About Overstock.com
Overstock.com, Inc. is an online "closeout" retailer offering discount, brand-name merchandise for sale over the Internet. The company offers its customers an opportunity to shop for bargains conveniently, while offering its suppliers an alternative inventory liquidation distribution channel. Overstock.com, headquartered in Salt Lake City, is a publicly traded company listed on the NASDAQ National Market System and can be found online at http://www.overstock.com.

About MKS
MKS is the premier provider of application lifecycle management solutions for the global 1000. MKS’s flagship ALM solution, MKS Integrity, is the most highly integrated ALM platform in the industry today, spanning all aspects of the software development lifecycle and supporting critical business transformations including SOA, application rationalization and outsourcing. MKS Integrity’s single architecture drives high levels of user productivity, facilitates rapid deployment and process standardization while delivering a complete view of application development activity through real time metrics, trends and reporting. MKS Integrity also provides essential support for IT operations through software deployment and issue management. Founded in 1984, MKS serves more than 10,000 customers in countries across the world. Whether through deployment of MKS’s solution strategically on an enterprise scale, or by leveraging individual components to solve project-level challenges, our customers can use MKS’s software to enable higher levels of process maturity, better manage global development activity and safeguard their most critical business applications and software assets. Under its widely known MKS Toolkit brand, MKS also provides UNIX-Windows co-existence and system administration that significantly cut development and administrative costs and reduce time to market, while enabling enhanced performance. More information about MKS can be found at http://www.mks.com or by calling 1-800-265-2797 (US & Canada), +49-711-351775-0 (Germany), +44-1483-733900 (United Kingdom) and 1-519-884-2251 (Rest of World).

Copyright © 2006 MKS Inc. and MKS Toolkit are trademarks or registered trademarks of MKS Inc. All other trademarks mentioned in this release are the property of their respective owners.

This news release contains forward-looking statements that involve risks and uncertainties, which may cause actual results to differ materially from the statements made. When used in this document, the words "may", "would", "could", "will", "intend", "plan", "anticipate", "believe", "estimate", "expect" and similar expressions are intended to identify forward-looking statements. Such statements reflect the Company’s current views with respect to future events and are subject to such risks and uncertainties. Many factors could cause our actual results to differ materially from the statements made including those factors detailed from time to time in filings made by the Company with Canadian securities regulatory authorities. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward looking statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated or expected. Although the Company believes the expectations represented by such forward looking statements are reasonable, there can be no assurance that those expectations will prove to be correct. The Company does not intend and does not assume any obligation to update these forward-looking statements.

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