SAN MATEO, Calif., May 17, 2010 (BUSINESS WIRE) --Keynote Systems (Nasdaq:KEYN), the global leader in on-demand mobile and Internet test & measurement solutions for continuously improving the online experience, announced it intends to participate at the 11th Annual B. Riley & Co. Investor Conference on Tuesday, May 25th, 2010 at 10:30 a.m. PT at the Loews Santa Monica Beach Hotel. Presenting from management will be Umang Gupta, chairman and CEO; and Drew Hamer, chief financial officer.

The presentation used at the conferences will be available at Keynote's website http://www.keynote.com in the Investor Relations section.

About Keynote

Keynote Systems (Nasdaq "KEYN") is the global leader in on-demand test & measurement solutions for continuously improving the online experience. For over a decade, Keynote has been providing measurement data and testing capabilities that allow companies to understand and improve their customers' online and mobile experience. Keynote has four test and measurement businesses: Web performance, mobile quality, streaming & VoIP, and customer experience/UX.

Known as The Mobile and Internet Performance Authority(TM), Keynote has a market-leading infrastructure of over 3,000 measurement computers and mobile devices in over 240 locations around the world. Keynote's 2,800 customers represent top Internet and mobile companies including American Express, Disney, eBay, E*TRADE, Expedia, Microsoft, SonyEricsson, Sprint, T-Mobile, Verizon, Vodafone and YouTube.

Keynote(R), DataPulse(R), CustomerScope(R), Keynote CE Rankings(R), Keynote Customer Experience Rankings(R), Perspective(R), Keynote Red Alert(R), Keynote Traffic Perspective(R), Keynote WebEffective(R), The Internet Performance Authority(R), MyKeynote(R) , SIGOS(R), SITE(R), Keynote(TM) The Mobile & Internet Performance Authority(TM) and Keynote FlexUse(TM) are trademarks or registered trademarks of Keynote Systems, Inc. in the United States and/or other countries. All other trademarks are the property of their respective owners. © 2010 Keynote Systems, Inc.

SOURCE: Keynote Systems, Inc.

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