BackWeb´s Internet Communication Software Deployed to BancBoston Robertson Stephens´ Institutional Sales Team and Traders

SAN JOSE, Calif., — September 23, 1999 — BackWeb® Technologies (Nasdaq: BWEB), a leading provider of Priority Internet communications software for the extended enterprise, today announced that BancBoston Robertson Stephens has deployed its technology to deliver time-sensitive, business-critical information to its institutional sales representatives and traders. BancBoston Robertson Stephens is an international investment banking firm specializing in growth companies.

"BackWeb's Internet communications technology has given our sales team and traders a strong competitive edge," said Ed Brandman, Managing Director and co-head of Trading, BancBoston Robertson Stephens. "With BackWeb, we can now proactively deliver critical information, such as market updates about mergers and acquisitions, initial public offerings and private equity placements; equity research; and news about buy/sell ratings to our sales representatives and traders. As a result, they are able to respond more effectively to changing market conditions. This type of priority Internet communications is what drives the competitive advantage for our organization and our customers."

"A company's ability to adapt and respond to critical change is paramount in today's fast-paced business world. No place is that more crucial than in the financial services industry where time is money," said Eli Barkat, Chairman and CEO of BackWeb Technologies. "Ultimately, BancBoston Robertson Stephens is better meeting the needs of its customers —institutional investors — by ensuring that its sales team and traders have the most up-to-date information possible."

BackWeb's Priority Internet communication software is based on a set of flexible, scalable technologies that enable an organization to capture information from virtually any data source, and efficiently and reliably deliver it throughout the extended enterprise.

BackWeb's patented Polite Agent™ technology ensures network-sensitive delivery of sizeable digital data of any format to users' desktops across an extended network. The Polite Agent detects idle bandwidth and invisibly delivers content in the background.

BackWeb's sophisticated attention management tools, or Flashes, enable companies to capture the attention of its users through the use of rich multimedia — graphics, text, video, animation and sound. Flashes are automatically delivered to a person's desktop, regardless of the application in use, and can be prioritized with different levels of urgency. They also have tracking tools that allow senders to monitor who has reacted to the information.

About BackWeb Technologies
BackWeb Technologies is a leading offline Web software company. BackWeb extends the value of technology investments by offering mobile and remote employees offline access to portals, intranets and other Web-based applications and content. The company's products reduce network costs and improve the productivity of an increasingly mobile workforce. At the core of BackWeb's products is its patented Polite® synchronization technology that can distribute large amounts of data even over narrow bandwidth connections. BackWeb® customers include market leaders such as Boehringer Ingelheim, Centocor, Eastman Kodak, GE Healthcare, Guidant, HP, KLA Tencor, Lam Research, Pfizer and more than one hundred other companies. BackWeb also has strategic reseller alliances with software industry leaders: Plumtree, SAP and IBM. The company is headquartered in San Jose, Calif. and Rosh Ha'ayin, Israel. For more information, visit www.backweb.com or call (800) 863-0100.

Statements in this news release, which are not purely historical, are forward-looking statements within the meaning of the U.S. Securities laws, including statements of beliefs, plans, expectations or intentions regarding the future. Examples of these statements include, but are not limited to, the ability of BackWeb software to allow customers to gain mobile, disconnected use of their portals and help increase field sales and field service productivity, the integration of BackWeb software with BEA products will help developers extend portal applications for offline use without changing the way they work, and the ability of the resulting applications to help field sales and service organizations realize maximum productivity, cost savings, and process acceleration gains while disconnected from the network. Actual results could differ materially from those in such forward-looking statements. Factors that could cause actual results to differ materially include unforeseen technological issues related to use of the BackWeb software, deployment issues related to implementation, unforeseen software errors, competitive factors and business and expense factors that may affect the perceived efficiencies from use of BackWeb's products, and the risks and uncertainties detailed from time to time in BackWeb's periodic reports and registration statements filed with the U.S. Securities and Exchange Commission. BackWeb assumes no obligation to update any forward-looking statements contained in this press release.