Press Room: 2005

Keynote CEO and CFO to Present at Prestigious AeA Classic Investor Conference

American Electronics Association Classic Financial Conference Takes Place November 6 through 9 in San Diego, California

San Mateo, Calif., — November 3, 2005 — Keynote Systems (Nasdaq: KEYN), the worldwide leader in services that improve online business performance and communications technologies, today announced that it will present at the American Electronics Association (AeA) Classic Financial Conference in San Diego on Tuesday, November 8 and Wednesday, November 9, 2005.

Umang Gupta, chairman and CEO and Peter Maloney, CFO of Keynote Systems, Inc. will represent the company. The company will host multiple 45-minute meetings with investors over the two day period.

What:
Keynote Systems, Inc Presentation at AeA Classic Financial Conference

When:
Tuesday, November 8, 2005, from 2:00 PM to 5:45 PM
Wednesday, November 9, 2005, from 8:00 AM to 12:45 PM

Where:
Manchester Grand Hyatt, One Market Place, San Diego, California, Room 915

For 35 years, AeA's prestigious and unbiased Financial Conferences have been bringing together company executives from public technology companies with key technology investors — creating the perfect venue to accelerate investment interest. In its 35th year, the AeA Classic continues to be the premier, unbiased financial conference for public technology companies, providing a powerful platform for member companies to present their corporate message to key technology investors.

About Keynote
Founded in 1995, Keynote Systems (Nasdaq "KEYN"), The Internet Performance Authority®, is the worldwide leader in services that improve online business performance and communications technologies. Approximately 2,300 corporate IT and marketing departments and 13,000 individual subscribers rely on Keynote's growing range of measurement and monitoring, service level and customer experience management services to improve e-business performance by reducing costs, improving customer satisfaction and increasing profitability.

Keynote is viewed as The Internet Performance Authority due to the company's global infrastructure of over 1,600 measurement computers in more than 50 cities worldwide that capture and store on a daily basis over 60 million Internet performance measurements, frequent media citations quoting Keynote's Web performance data and analysis, the company's market-leading Web performance indices for vertical markets and leading customer research that provides critical business insight into online customer experiences, industry trends and competitive Web strategies.

Keynote Systems, Inc. is headquartered in San Mateo, California and can be reached at www.keynote.com or by phone in the U.S. at 650-403-2400.

Keynote, The Internet Performance Authority and Perspective are registered trademarks of Keynote Systems, Inc. Other trademarks are the property of their respective owners. © 2005 Keynote Systems, Inc.

Editorial Contact:
Dan Berkowitz, Keynote Systems, (650) 403-3305 dberkowitz@keynote.com

Investor Relations Contact:
Jack Andrews, Keynote Systems, (650) 403-3431 jandrews@keynote.com