Corel Selects ATG to Power Global e-Commerce Sites.

Leading graphics, productivity and digital media software provider selects ATG's Commerce Suite and Commerce Service Center to create a fully personalized, seamless experience for Web customers around the globe

CAMBRIDGE, Mass. -- ATG (Art Technology Group, Inc., NASDAQ: ARTG), the premier provider of e-commerce solutions, today announced that Corel Corporation (NASDAQ:CREL) (TSX:CRE), a leading developer of graphics, productivity and digital media software, has selected ATG's Commerce Suite to power Corel's global network of e-commerce sites. After investigating a variety of e-commerce solutions, Corel chose the ATG Commerce Suite for its unique advanced personalization capabilities and merchandising tools, which will put more control of each site into the hands of non-IT business users. Additionally, Corel will implement ATG Commerce Service Center, a contact center application integrating e-commerce functionality with back-end order administration, sales support and customer care features.

Having served as the e-commerce platform for various high-technology and global software brands, the ATG Commerce Suite is highly scalable and has earned a reputation as the best-in-class software for high-volume, sophisticated e-commerce sites. As Corel continues to grow its global presence, the company decided to invest in a next-generation e-commerce platform with ATG. Valued ATG implementation partner Desato will assist Corel in creating all of the new sites.

"Whenever we consider a new project, our primary motivation is to determine how we can best meet our users' needs and deliver a great experience with our company and products," said John Zoglin, vice president of e-commerce for Corel. "Our online stores play a critical role in helping us achieve this goal. When we evaluated the technology options available for improving our sites, we found that ATG's Commerce Suite offered the features and track record that supported our vision. With our new sites, Corel's global teams will have more control over the types of content and promotions they can provide our customers - giving them a customized experience that's even more relevant and compelling."

"The Corel brand is synonymous with cutting-edge software and ATG is very proud to be chosen as their e-commerce software provider," said Bill Zujewski, ATG's vice president of product marketing. "More than ever, companies need to make sure their Web stores cater to individual customer needs and preferences to stand out from competition and encourage brand loyalty. We're looking forward to the launch with Corel in 2009."

The ATG Commerce Suite is a comprehensive, flexible, highly scalable e-commerce platform that drives every phase of a personalized online shopping experience. By making shopping and buying experiences more personal and fulfilling for visitors, commerce sites deployed on the ATG platform yield higher conversion rates and order sizes.

About ATG

A trusted, global specialist in e-commerce, ATG (Art Technology Group, Inc., NASDAQ: ARTG) has spent the last decade focused on helping the world's premier brands maximize the success of their online businesses. The ATG Commerce application suite is the top-rated platform by industry analysts for powering highly personalized, efficient and effective e-commerce sites. The company's platform-neutral e-commerce optimization services can be easily added to any Web site to increase conversions and reduce abandonment. These services include ATG Recommendations and eStara Connections. The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America and Europe. For more information, please visit http://www.atg.com.

[c] 2008 Art Technology Group, Inc. ATG and Art Technology Group are registered trademarks. All other product names, service marks, and trademarks mentioned herein are trademarks of their respective owners.

This press release contains forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks and uncertainties that may cause ATG's actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Important risk factors affecting ATG's business generally may be found in its periodic reports and registration statements filed with the Securities and Exchange Commission at http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Fwww.sec.gov&esheet=5833167&lan=en_US&anchor=www.sec.gov&index=2 . Risk factors related to the subject matter of this press release include the possibility that the ATG product deployment will not be successful, on time or significantly enhance the user's Internet experience or will not increase customer revenue across brands; that those customers leveraging ATG will not have the opportunity to increase revenue and decrease future costs; the need to adapt to rapid changes so products do not become obsolete; the possibility of errors in ATG's software products; the possibility that the solution will not make customer implementations faster or more flexible or permit the customer to meet its customer-facing or infrastructure requirements; that the ATG product will not continue to be integrated with third party applications servers or will not support all Web services enabled systems; that ATG's product strategy may change in the future; and the risks and costs of intellectual property litigation. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.