PRESS RELEASE

StreamBase Wins Best Streaming Data Solution for 2nd Year Running

Waters Awards Affirms Maturity of StreamBase’ Solutions for Streaming Data

LEXINGTON, MA — July 1, 2008  — StreamBase Systems maturity as a Streaming Data Solution provider was further enhanced as readers of Waters Magazine officially named the company as the "Best Streaming Data Management Solution for 2008."  Readers voted for StreamBase’s solutions over and above a number of well-known rivals in a competition that is entirely reader generated.

Mark Palmer, President and COO at StreamBase, said, “We’re delighted to be announced as the winner of the prestigious Waters award.  As one of the leading publications in financial services, the readers represent experienced professionals who know the market well.”

Waters covers the practical implementation of technology in the securities industry and is relied on by financial technology professionals worldwide for focused, in-depth coverage of financial market data and technology. Each year, the editorial staff at Waters asks the readers to cast votes for their favorite tools and services in financial IT. This year, more than 1,000 voters from six continents weighed in on which tools and services their firms "can't live without.”

The complete results of the 2008 Waters Rankings will be published in the July 2008 issue of Waters Magazine and will also be made available at www.watersonline.com.

About StreamBase
StreamBase Systems, Inc, a leader in high-performance Complex Event Processing (CEP), provides software for rapidly building systems that analyze and act on real-time streaming data for instantaneous decision-making. StreamBase’s Event Processing Platform™ combines a rapid application development environment, an ultra low-latency high-throughput event server, and the broadest connectivity to real-time and historical data. Leading investment banks, hedge funds, and government agencies use StreamBase to power mission-critical applications that increase revenue, lower costs, and reduce risk. The company is headquartered in Lexington, Massachusetts. For more information, visit www.streambase.com.

About Waters Magazine
Each month, Waters reports and analyzes the business reasons for and practical implementation of financial technology in the capital markets and securities industry. Since its launch in 1993, securities industry professionals worldwide have relied on the magazine for its focused, in-depth coverage surrounding the confluence of business and technology in market data, trading and risk technology and infrastructure as well as the human issues of talent management, staff retention and compensation within the financial services community. With more than 10,100 subscribers around the world*, Waters' readers enjoy the insights of CIOs and CTOs from the global markets. The magazine also releases the electronic newsletter Waters News each Tuesday to more than 14,000 industry professionals and it sponsors conferences in New York, London, and Singapore. Waters also hosts briefings, and training courses in many of the world's financial centers. For more information, visit www.watersonline.com.