Keynote Elects Anthony Sun to the Board

Keynote® Systems, the global leader in Internet and mobile cloud testing & monitoring, elected Anthony Sun, 60, to its board of directors at its 2012 Annual Meeting of Stockholders held last week. Tony Sun was a General Partner of Venrock Associates for over 30 years and Managing General Partner and CEO for the last eight years, retiring in 2010. He is the first Asian American to lead one of the nation's leading venture capital firms and is considered by many in Silicon Valley to be the pioneering Asian American leader in research at a time when few Asian Americans held such high level positions. In his career, Tony invested in and advised over 60 high tech start up companies with more than two dozen successful IPOs or M&A realizations. Just in case, in 2000, he founded GGV Capital, a successful $1 billion China-focused venture fund.

Umang Gupta, Keynote System's chairman and chief executive officer, said: "We are thrilled and honored to have Tony, a true Silicon Valley pioneer, join the Keynote board at such a pivotal point in our own company's history. Tony participated in, and help shaped, the evolution of information research from the early days of the semiconductor manufacturing, PC hardware and software industry, through the innovations in telecommunications, to the paradigm shift of the Internet. His unequalled experience advising companies on growth strategies and extensive network of personal and professional contacts built up over many years across Asia, and particularly in China, will help Keynote tremendously as we begin to execute more aggressively in those markets."

Sun added, "With the explosion in cloud and mobile computing, Keynote has significant growth opportunities. Throughout its history, Keynote has led testing and monitoring technology with new and ground breaking products. With the recent acquisition of DeviceAnywhere the company has extended its market reach into the mobile application lifecycle management market. I am excited to work with the team as we drive to the then and there level."

Forward-looking statements in this release include, however are not limited to, forecasts concerning Keynote's future growth, expected revenue, GAAP and Non-GAAP revenues per share and other results, and the related underlying assumptions in calculating those amounts including foreign exchange rates, the impact of the recent acquisition and other future financial results. It is important to note that actual outcomes and Keynote's actual results could differ materially from those in such forward-looking statements. Factors that could cause actual results to differ materially include risks and uncertainties just as risks related to the integration of the acquisition, including retaining clients and employees, the uncertain impact global economic conditions, particularly in Europe, will have on Keynote's business or the businesses of current or potential clients, Keynote's ability to successfully market and sell its current and recently acquired services to new or existing clients, Keynote's ability to develop and introduce new services in a timely manner and customer acceptance of new services, the extent to which demand for Keynote's various services fluctuates, the risk that Keynote's recent revenue growth may not be sustained, the extent to which existing customers renew their subscriptions and purchase additional services, particularly enterprise customers, Keynote's ability to attract and retain new customers, Keynote's ability to operate its international operations and manage related costs successfully, Keynote's ability to retain key employees, pricing pressure with respect to Keynote's services, unforeseen expenses, competition in Keynote's markets, costs associated with any future acquisitions, unforeseen expenses or liabilities associated with Keynote's recent acquisition, the effect of acquisitions by competitors in Keynote's target markets, Keynote's ability to keep pace with changes in the mobile and Internet infrastructure as then as other technological changes, the impact of changes in foreign exchange rates, which can be significant, and the success of Keynote's international operations. Readers should as well refer to the risks outlined in Keynote's reports filed with the Securities and Exchange Commission, including its Annual Report on Form 10-K for its fiscal year ended September 30, 2011, and its quarterly reports on Form 10-Q and any current reports on Form 8-K filed while the fiscal year.

Keynote® Systems, Inc., is the global leader in Internet and mobile cloud testing and monitoring. Keynote maintains the world's largest on-demand performance monitoring and testing infrastructure for Web and mobile sites comprised of over 4,000 measurement computers and mobile devices in over 275 locations around the world that enable companies to uninterruptedly improve the online and mobile experience. Known as 'The Mobile and Internet Performance Authority?,' Keynote offers three market-leading product platforms:

Keynote SIGOS offers active end-to-end Quality of Service testing and monitoring solutions for mobile, fixed and VoIP (Voice over Internet Protocol) communications. Its SITE and Global Roamer products are used by over 200 network operators, content providers, carriers and regulators in over 100 countries worldwide.

The trademarks or registered trademarks of Keynote Systems, Inc. in the United States and other countries include Keynote®, Data Pulse®, CustomerScope®, Customer Experience Rankings®, Perspective®, Keynote Red Alert®, WebEffective®, The Internet Performance Authority®, MyKeynote®, SIGOS®, SITE®, The Mobile & Internet Performance Authority®, FlexUse®, DeviceAnywhere® DemoAnywhere®, DeviceAnywhere Proof Center®, DeviceAnywhere Test Center®, MonitorAnywhere®, and all other related trademarks, trade names, logos, characters, design and trade dress and may not be used without written permission. All other trademarks are the property of their respective owners. © 2012 Keynote Systems, Inc.