Press Release

ON24, Inc. Ranked #14 In Deloitte's 2006 Silicon Valley Fast 50 Software Company List

Company achieves significant turnaround from 2001 - 2005

San Francisco, CA – October 26, 2006 – ON24, Inc., the global leader in webcasting and video communication solutions, today announced that it has been named #14 in Deloitte's 2006 Silicon Valley Fast 50, a ranking of the 50 fastest growing software companies in Silicon Valley. Rankings are based on percentage revenue growth over five years, from 2001-2005. ON24 was also ranked #252 on Deloitte's list of fastest growing companies in North America.

"Earning a place on the Fast 50 list is a tremendous achievement, given the increasingly competitive technology landscape coupled with the requirement to sustain exceptional revenue growth over five years," said Sharat Sharan, President and CEO, ON24 Inc. "Even more so, ON24 achieved a major turnaround by changing its business model in 2001 in one of the worst technology downturns. I want to thank our customers, investors, and employees for their support during this process."

"Sophisticated technology is becoming the norm and is in almost everything in the 21st century," said Tony Kern, deputy managing principal of Deloitte's Technology, Media & Telecommunications industry practice. "ON24 has developed technology solutions that deliver in today's highly competitive world, and we applaud their efforts, ingenuity and teamwork in becoming one of the fastest growing technology companies in North America. We commend ON24 for making the commitment to technology and delivering on the promise of market longevity."

ON24 was among the top 51 percent of the Fast 500 companies in North America. The 12th Annual Deloitte Technology Fast 500 list is published on www.fast500.com.

About ON24, Inc.
ON24 is the global leader of web casting and video communications solutions. More than 500 leading organizations including Cardinal Health, Cisco Systems, Motorola, CMP Media, Credit Suisse, Dept. of Education, Hewlett-Packard, National Science Foundation and Sun Microsystems use ON24 for activities such as lead generation, internal communications, conferences and events, product launches, sales training, continuing professional education, and executive announcements. The Company headquarters is in San Francisco, with offices in Washington, D.C., New York and London.

“A World of Webcasting Solutions. One Webcasting Provider”™ - is a trademark of ON24.

“Insight24^SM” - your B2B rich media network for information, intelligence, and insight - is a service mark of ON24 Inc.