JAVA ONE, SAN FRANCISCO, June 6, 2000 - Bluestone® Software, Inc. (Nasdaq: BLSW), a leading provider of Enterprise Interaction Management software, and THOUGHT Inc.™, the market leader in Java-based object-oriented Mapping Middleware technology, today announced a strategic relationship that expands the container managed persistence options for Bluestone's newly-released Total-e-Server™, the next generation of Bluestone's award-winning Sapphire/ Web® Application Server (Release 7) and the Application Server edition of Bluestone's comprehensive, standards-based Total-e-Business™ platform.

Leveraging the pluggable persistence model of Total-e-Server's Enterprise Java Bean (EJB) server, Bluestone application developers now have a choice of bean persistence technologies for their EJBs. In addition to Bluestone's own XML-based CMP services, developers can opt to use the facilities of CocoBase™ Enterprise O/R, THOUGHT's leading object/relational mapping tool. Utilizing CocoBase, developers can generate persistent beans that can be deployed in Bluestone's Application Server framework.

"By eliminating the need to understand or directly implement persistence code, container managed persistence is a powerful tool for developers charged with developing EJBs," said Ward Mullins, CTO of THOUGHT Inc.. "Our Repository-based object mapping technology represents the state-of-the-art in object/relational mapping. Integration with Bluestone's Total-e-Server marries two best-of-breed products to deliver a world-class solution."

Added Bob Bickel, senior vice president and executive technology officer for Bluestone Software, "Fundamental to the Bluestone philosophy is creating open, extensible architectures that let users work with the tools and technologies they choose. Adhering to this philosophy, Total-e-Server lets EJB developers work with their preferred CMP technology. THOUGHT's leadership in CMP services makes them a logical partner for Bluestone and our customers."

About Thought Inc.

Established in 1993, THOUGHT Inc. is the market leader in Java-based object-oriented Mapping Middleware technology. THOUGHT Inc. has been shipping CocoBase, the patented flagship product and the industry's most advanced framework for accessing legacy data in a distributed application since March of 1997. Since that time, THOUGHT Inc. founders have successfully provided solutions for customers deploying applications on the Worldwide Web and have gained a reputation for excellence in their field. CocoBase is a standards based product relying on such technologies as RMI, CORBA, JDBC, EJB, etc. Thought Inc. makes its home in San Francisco supporting customers worldwide in the United States, Europe, Japan, Asia and Australia. The CocoBase family of products are available through distributors, resellers and directly online at their Yahoo Store. CocoBase and THOUGHT Inc. are registered trademarks of THOUGHT Inc. CocoBase technology is based on US patent #5857197. More information on THOUGHT Inc. can be found online at www.thoughtinc.com.

About Bluestone Software
Bluestone® Software, Inc. is a leading provider of Enterprise Interaction Management software. Companies deploying e-business applications, like Avnet, CDNow, Food.com, MCI WorldCom, Planalytics, Reliance National, and Time Inc., rely on Bluestone Total-e-Business™, Bluestone Sapphire/Web®, and Bluestone XML Suite™ 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 and Sapphire/Web are registered trademarks, and Total-e-Server, Total-e-Business, and Bluestone XML Suite are trademarks of Bluestone Software, Inc. THOUGHT Inc. and CocoBase are trademarks of THOUGHT Inc. 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 publicly filed reports with the Securities and Exchange Commission, which may cause Bluestone's actual results, performance, or achievements or those of its customers, its industry, or its Code Blue developers to be materially different from the future results, performance or achievements expressed or implied by these forward looking statements. Specifically, the Company's beliefs with respect to the business opportunities presented by e-business and the 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 the Company or any other person that Bluestone's objectives and plans will be achieved.