PalmSource and CSDN Launch New Online Forum for Chinese Developer Community

BEIJING, PalmSource China Conference, Dec. 8, 2003 - PalmSource, Inc. (NASDAQ: PSRC) provider of Palm OS®, a leading operating system powering next generation mobile devices and smartphones and China Software Developer Network (CSDN.net), a leading Web site for professional software developers in China, today announced the launch of a new online Palm OS developer forum designed to bolster the success of the Palm OS developer community in China.

The online forum, located at http://expert.csdn.net/Expert/deeptree/RoomForum.asp?bigroomid=66, provides a repository with the latest technical information, resources and support for the Chinese Palm OS developer community. Chinese Palm OS developers can communicate with each other, share experiences and exchange technical and business information to help launch and promote innovative Palm OS applications for the China market. PalmSource will monitor and moderate this forum along with volunteers from the local Palm OS developer community. The new online forum underscores PalmSource's commitment to spur growth and drive innovation in the Palm OS Chinese developer community.

"We are pleased to partner with PalmSource to offer the most comprehensive information and technical services available online for the Chinese Palm OS developer community," said Tang Qi, marketing director of CSDN. "The new online forum will enable continued innovation in Palm OS application development and create critical networking opportunities for software developers." "The online forum will provide existing Palm OS developers in China the support they need to continue to create innovative solutions for Palm Powered smart mobile devices, while encouraging new software developers to program for Palm OS," said Larry Berkin, director of developer marketing, PalmSource.

About CSDN
CSDN (China Software Developer Network, www.csdn.net), the biggest network of software developers in China, founded in March 1999, is committed to providing software developers, IT professionals and Enterprises with the most comprehensive information and technical services available online. Over 100,000 software developers and IT professionals visit CSDN.net daily generating more than 60 million page views per month. Currently, CSDN's registered membership is has grown to be more than 600,000 members and includes over 17,600 enterprises worldwide. CSDN hosts an average of 4,000 simultaneous daily users on their developer forums and has established itself as the most popular destination site for the community of software developers and IT professionals throughout Asia and within mainland China.

About PalmSource
PalmSource, Inc. is the company behind Palm OS, a leading operating system for mobile information devices. More than 30 million Palm Powered handhelds and smartphones have been sold to date worldwide. Industry leaders Aceeca, AlphaSmart, Fossil, Garmin, GSL, HuneTec, Kyocera, Lenovo, palmOne, PerComm, Samsung, Sony, Symbol Technologies and Tapwave license Palm OS to create diverse mobile devices that meet unique customer needs. Palm OS has given rise to a large community of users, enterprises, developers and manufacturers, who together make up the Palm economy. More information about PalmSource is available at www.palmsource.com, http://www.palmsource.co.uk,http://www.palmsource.fr, http://www.palmsource.de and https://www.palmsource.com.cn. Palm OS is a registered trademark and Palm Powered is a trademark of Palm Trademark Holding Company, LLC. Other brands may be trademarks of their respective owners.

This press release contains forward-looking statements that involve risks and uncertainties, as well as assumptions that, if they never materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. Such forward-looking statements include, without limitation, statements related to the launch of the new online Palm OS developer forum, PalmSource's commitment to the Palm OS Chinese developer community, the success of the Palm OS developer community in China, and the ability of Palm OS developers to create solutions for Palm Powered mobile devices. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include, without limitation, the adoption and successful use of the online Palm OS developer forum by China developers, our realization of the anticipated benefits from PalmSource's commitment to spur growth and drive innovation in the Palm OS Chinese developer community, the ability of our developers to create innovative solutions for Palm Powered smart mobile devices, the ability of our developers to compete with existing or new competitors and to timely introduce new products, our ability to maintain and grow the Palm OS developer community, general economic conditions in the U.S. and abroad and other risks and uncertainties contained in our public announcements, reports to stockholders and other documents filed with and furnished to the Securities and Exchange Commission, including our Quarterly Report on Form 10-Q for the period ended August 29, 2003. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we assume no obligation to update these forward-looking statements.