Joint Development to Address Content Re-use and Distribution as a Key Component of Interwoven's Content Interchange B2B Framework

SUNNYVALE, Calif. and PHILADELPHIA. September 26, 2000- Interwoven, Inc. (Nasdaq: IWOV), the leading provider of enterprise-class content management software and Bluestone Software, Inc. (Nasdaq: BLSW), a leader in business-to-Web and wireless technologies, today announced that the two industry leaders are collaborating to create the next generation of content syndication services. Interwoven has agreed to license certain components of Bluestone's J2EE platform as the foundation for extensions to Interwoven's syndication offering. Together, Interwoven and Bluestone will develop these extensions to enable high volume content exchange. Enhancing content management with advanced syndication services is especially critical as businesses extend their traditional Web properties to serve the projected $6.3 trillion B2B market by 2004.

"As the e-business world expands, syndication becomes an increasingly critical event," said John Van Siclen, senior vice president of corporate development for Interwoven. "Interwoven already provides deployment of all Web assets including application code and database assets to large, complex Web sites and Web hosting servers. By leveraging components within Bluestone's highly scalable and fault tolerant J2EE-based platform, we can more rapidly extend our leadership position in content deployment to the B2B application marketplaces. This joint development with Bluestone will help Interwoven set the standard for the new breed of content syndication."

"Interwoven is the clear leader in enterprise-class content management for corporations with multiple global e-business initiatives," said John H. Capobianco, executive vice president of strategic planning for Bluestone Software. "Regardless of application, these enterprises increasingly need the flexibility, scalability and reliability of a powerful J2EE-based platform such as that provided by Bluestone. We are excited to have been chosen by Interwoven to provide the foundation J2EE infrastructure for Interwoven's next generation of syndication services."

Interwoven's content syndication solutions intend to address many key challenges faced by e-business application providers; for example, the ability to dynamically access and syndicate assets directly from the content repositories to multiple application delivery systems. These syndication solutions will build upon Interwoven's open, standards-based content management and replication technologies, and will leverage the subscription database and scheduling services offered by Bluestone's high-performance and scalable J2EE-based platform.

In addition, Interwoven's syndication extensions will enjoy Bluestone's implementation of a J2EE-based platform including Enterprise JavaBeans (EJB) 1.1, which Bluestone has enhanced with global-class services. These services include XML persistence mapping, Dynamic XSL Stylesheets, load balancing, application management, security, as well as Universal Listener Framework (ULF) scheduling services. Performance-oriented facilities unique to Bluestone, such as Customer Facing Fault Tolerance, Internet Quality of Service (IQS), and Hot Versioning are also included as part of the license agreement. Interwoven announced its Content Interchange B2B Framework on August 16, 2000, please see http://www.interwoven.com.tw/news/press/2000/0816frameworkpr.html for details.

Interwoven, Inc. (NASDAQ: IWOV) is the leading provider of enterprise-class Web content management software. Its flagship product, TeamSite, controls the development, management and deployment of business-critical Web sites. As the platform for eBusiness, Interwoven enables electronic commerce, customer relationship management, supply chain management and knowledge management for Web leaders and Fortune 1000 companies moving to the Web. TeamSite is available for both the Sun Solaris operating system and Microsoft Windows platform. For more information on the company and its software solutions, visit the Interwoven Web site at www.interwoven.com.tw or e-mail info@interwoven.com

Bluestone Software, Inc. is a leader in business-to-Web and wireless technologies. Companies deploying e-business applications, like Avnet, Food.com, Hewlett-Packard, Planalytics, Reliance National, SGI, and Time Inc., rely on Bluestone's Total-e-Business platform to provide comprehensive e-business platforms, Internet-class infrastructures, and robust integration services that e-business success demands. Bluestone is headquartered at 300 Stevens Drive, Philadelphia, Pennsylvania, 19113-1597. For more information, please call 888-Bluestone or 610-915-5000, email info@bluestone.com , or visit http://www.bluestone.com .

Bluestone is a registered trademark, and IQS, Hot Versioning, and Total-e-Business are trademarks of Bluestone Software, Inc. Java and J2EE are trademarks of Sun Microsystems, Inc. in the United States and other countries. All other names, brands or products may be trademarks or registered trademarks of their respective owners. Certain statements in this press release constitute forward-looking statements as such term is defined in the Private Securities Litigation Reform Act of 1995. Forward looking statements involve known and unknown risks, uncertainties and other factors, including those contained in Bluestone's and/or Interwoven's publicly filed reports with the Securities and Exchange Commission, which may cause Bluestone's and/or Interwoven's actual results, performance, or achievements or those of its customers or its industry to be materially different from the future results, performance or achievements expressed or implied by these forward looking statements. Specifically, each company's beliefs with respect to the business opportunities presented by e-business, the projected B2B market by 2003, and each company's ability to profitably market and deploy its product solutions may prove to be inaccurate. In light of the significant uncertainties inherent in these forward looking statements, the information in this press release should not be considered a representation by either company or any other person that Bluestone's and/or Interwoven's objectives and plans will be achieved.