Centra Swings at Annual User Conference Conference Success Reaffirms Centra's Leadership Position; Launch of Centra 7 Highlights a Week of Keynotes, Sessions and Labs.

Business Editors/High-Tech Writers

LEXINGTON, Mass.--(BUSINESS WIRE)--June 3, 2003

Centra Software, Inc. (NASDAQ: CTRA), a leading provider of application software and services for real-time enterprise collaboration (RTEC), successfully completed its fourth annual worldwide user conference May 12 - 15, 2003. An annual event since 1999, the conference, Orchestrating Your Business Success, was held at the Westin Copley Place Hotel in Boston. Highlights of the conference included keynote presentations from two luminaries in their respective fields, Keith Lockhart, Conductor of Boston Pops Orchestra, and Elliott Masie, founder of The Masie Center. Attendees were later treated to "Swing Night," a popular program presented by the world-renown Boston Pops Orchestra at Boston's Symphony Hall.

Centra Unveils Centra 7

A major component of Centra Summit 2003 was the launch of Centra 7. The new release, which incorporates a substantial amount of new functionality, was the focus of keynote presentations and multiple breakout sessions. "This is the release that our customers have requested," said John Walsh, Centra's vice president of product development. "Most of the new functionality in version 7 has come directly from user input, so we expect the user community to be very excited about this major upgrade."

"The turnout was great even after a tough year for our industry, proving that our user conference is as vibrant as ever," stated Leon Navickas, chairman and CEO of Centra. "We believe that strong interest in the launch of Centra 7 contributed to the success of our conference. "We would like to thank all of our customers and partners for their participation in making this conference a tremendous success. Their support and enthusiasm for our mission of setting the global standard for real-time enterprise collaboration applications will fuel future product innovation."

One of the many positive comments from attendees came from FileNet Corporation, a leading provider of Enterprise Content Management (ECM) solutions. "Centra's user conference is an important event for us," said Linda Wallace, vice president of Global Learning Services for FileNet. "The event provides information on technical advances from both the software and user perspective. The user conference also gives us the chance to compare notes and experiences with our peers across all industry segments."

About Centra

Centra offers enterprise applications software that enables organizations to shift their group-oriented business activities to the Internet or their internal network. Leading with an undisputed track record of helping more than 1,100 global corporations, government agencies and universities increase revenue and improve overall business performance, Centra offers a family of integrated real-time enterprise collaboration (RTEC) application software solutions and services to over 3.2 million licensed users. Customers drive greater productivity and lower their costs using Centra's solutions for collaborative eLearning, online sales and marketing, Web-based service and support, and other interactive, people-centric internal and customer-facing work. The applications can be deployed as on-premise software or through our ASP service, are available in 13 languages, and are supported by an active ecosystem of value-added partners, including Microsoft, Oracle, Siebel, Deloitte Consulting, EDS and Cisco. Today, organizations across every function, industry and market sector choose Centra, including Cadbury Schweppes, McKesson, Sysco, Viacom and Stanford University. Headquartered in Boston, Centra serves a worldwide customer base throughout the Americas, Europe, Asia and Australia. For more information, visit www.centra.com.

Safe Harbor Statement

With the exception of the historical information contained in this release, the matters described herein may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including but not limited to, statements concerning management's expectations regarding future results of operations, and statements that involve risk and uncertainties that may individually or mutually impact the matters herein, and cause actual results, events and performance to differ materially. Without limiting the foregoing, the words "believes," "plans," "expects," "anticipates" and similar expressions are intended to identify forward-looking statements. There are a number of important risk factors that could cause our results to differ materially from those indicated by such forward-looking statements. These risk factors include, but are not limited to, technological difficulties, the results of future research, uncertainty of product demand and market acceptance for the Company's Centra 7 collaboration platform and its other current and future products, the effect of economic conditions, the impact of competitive products and pricing, technological difficulties and/or other factors outside the control of the Company, which are detailed from time to time in the Company's Annual Report on Form 10-K for the year ended December 31, 2002 and other filings with the SEC, which are available at www.centra.com/investorrelations. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to release publicly the result of any revisions to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Centra is a registered trademark, and Centra 7 and CentraOne are trademarks of Centra Software, Inc. All other trademarks referenced herein are the property of their respective owners.