SAN MATEO, Calif.--(BUSINESS WIRE)--July 8, 2008--Keynote Systems (Nasdaq:KEYN), the global leader in on-demand mobile and Internet test & measurement solutions for continuously improving the online experience, will announce financial results for its fiscal year third quarter 2008 ended June 30, 2008 after the market closes on Tuesday, July 29, 2008. Keynote will host an earnings conference call at 2:00 P.M. Pacific (5:00 P.M. Eastern).

To access the call in the U.S., please dial (866) 271-6228, and for international callers dial (706) 679-4457 approximately 10 minutes prior to the start of the conference call. The conference call will also be broadcast live over the Internet and available for replay for 90 days at www.keynote.com. In addition, a replay of the call will be available via telephone for five business days, beginning two hours after the call. To listen to the telephone replay in the U.S., please dial 800-642-1687 and for international callers, dial 706-645-9291. Enter access code 55216017.

About Keynote

Keynote Systems (Nasdaq "KEYN") is the global leader in on-demand test & measurement solutions for continuously improving the online experience. As an independent and trusted third-party, Keynote provides IT and marketing executives with an unbiased view into their Internet services from around the world. For over a decade, Keynote has been providing measurement data and testing capabilities that allow companies to understand and improve their customer's online and mobile experience. Keynote has four test and measurement businesses: Web performance, mobile quality, streaming & VoIP, and customer experience/UX. In addition, Keynote's industry analysis group called Keynote Competitive Research publishes proprietary studies measuring customer experience and service levels across a wide range of industries.

Known as The Mobile and Internet Performance Authority(TM), Keynote has a market-leading infrastructure of 2,400 measurement computers and mobile devices in over 240 locations around the world. Keynote also maintains one of the most representative panels of online users consisting of 160,000 consumers. Keynote's on-demand, hassle-free infrastructure allows businesses to access services they need, when they need them to pinpoint and fix mobile quality and Internet problems before they impact customers.

Keynote helps over 2,700 corporate customers become "the best of the best" by helping them improve online business performance and mobile communications quality. Keynote's customers represent top Internet and mobile companies including American Express, BP, Caterpillar, Dell, Disney, eBay, E*TRADE, Expedia, FedEx, Microsoft, SonyEricsson, Sprint, T-Mobile, Verizon and Vodafone.

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 and The Mobile and Internet Performance Authority and True Experience are trademarks of Keynote Systems, Inc. Other trademarks are the property of their respective owners. (C) 2008 Keynote Systems, Inc.

CONTACT: Keynote Systems, Inc.
Dan Berkowitz, 650-403-3305 (Public Relations)
dberkowitz@keynote.com
Kirsten Chapman, 415-433-3777 (Investor Relations)
kchapman@lhai.com

SOURCE: Keynote Systems, Inc.