PalmSource Now Accepting Nominations for U.S. Powered Up Awards

* Palm, Cingular, PalmGear.com and CNET Download.com co-sponsor awards
* Best-In-Class to be selected for a $10,000 grand prize

SUNNYVALE, CA, November 14, 2005 — PalmSource, Inc. (NASDAQ: PSRC), provider of Palm OS®, a leading operating system powering next generation phones and mobile devices, today announced it has officially opened nominations for the Fall 2005 U.S. Powered Up Awards. The Fall 2005 Powered Up Awards are being co-sponsored by Palm, Inc., Cingular Wireless, PalmGear.com, a division of Motricity and CNET Download.com. The nominations are now being accepted and will close on Sunday, December 11, 2005. The U.S. Powered Up Award winners will be announced on Wednesday, December 14, 2005.

The awards will be given in five categories, and for the first time, the Powered Up Awards feature a monetary prize for the Best-In-Class grand prize. The winner of the Best-In-Class award will receive USD $10,000.00, a Palm, Inc. device of their choice and a co-marketing package valued at approximately USD $20,000.00.

“With over 400,000 registered developers, the PalmSource developer program comprises one of the world’s largest communities of mobile software developers for both commercial and in-house/enterprise software applications. Twice a year, with the Powered Up Awards, PalmSource traditionally recognizes Palm OS developers by highlighting the most innovative and compelling third party Palm OS applications,” said Albert Chu, PalmSource vice president of business development. “We are very pleased that this year Palm, Cingular, Motricity and CNET Download.com are co-sponsoring these awards, thereby demonstrating their continued commitment to the community of Palm OS developers and Palm Powered™ device customers.”

“The Palm OS® developer community continues its rich history of innovation by continuing to release a wide variety of applications. We believe these applications personalize the experience and deliver meaningful services enhancing the value and capabilities of smartphones and handhelds from Palm, Inc.,” said Paul Leeper, director of developer relations for Palm, Inc.

“Motricity, through its PalmGear.com division, is a longtime supporter of the Palm OS developer community,” said Larry Wallace, vice president of global sales and business development for Motricity. “Co-sponsoring the Powered Up Awards enables us to not only honor Palm OS developers, but to also encourage the development of new Palm OS solutions and further expand the Palm Powered™ smartphone and handheld markets.”

Fall 2005 U.S. Powered Up Award Categories
The Fall 2005 U.S. Powered Up Awards celebrate Palm OS developers who have created innovative software applications representing the best of breed in the Palm Powered economy and take advantage of the advanced features of Palm Powered phones and mobile devices. Powered Up Awards will be given in five categories:

* Enterprise / Productivity
* In-House/Custom Application (not commercially available)
* Wireless / Over-the-Air
* Multimedia
* Games / Entertainment

For the first time, the Powered Up Awards have added a monetary award as part of the Best-In-Class grand prize. The winner of the Best-In-Class grand prize will be selected by the U.S. Powered Up Awards judges from the nominees in the Enterprise/Productivity, Wireless/Over-The-Air, Multimedia and Games/Entertainment categories.

* The winner of the Best-In-Class award will receive USD $10,000.00, a Palm, Inc. smartphone or handheld of their choice and a co-marketing package valued at approximately USD $20,000.00.
* The winner of the Enterprise/Productivity category will receive a Palm Treo™ 650 smartphone and USD $1,000.00.
* The winner of the Wireless/Over-the-Air category will receive a Palm Treo 650 smartphone and USD $1,000.00.
* The winner of the Multimedia category will receive a Palm LifeDrive™ mobile manger and USD $1,000.00.
* The Winner of the Games/Entertainment category will receive a Palm Tungsten™ E2 handheld and USD $1,000.00.
* In addition, the winners in these categories will also receive a co-marketing package valued at approximately $13,000.00.

PalmSource is now accepting nominations for Powered Up Awards online at: www.palmos.com/dev/programs/poweredup. Rules and an FAQ are also available via this link.

Palm OS® developers may encourage nominations of their application by posting a banner on their website available online at: www.palmos.com/dev/programs/poweredup/promote_pua.html.

Nominations for the Powered Up Awards will close at 6:00 pm PST on Sunday, December 11, 2005. Winners will be announced on Wednesday, December 14, 2005.

About PalmSource
PalmSource, Inc., the company behind Palm OS®, a leading operating system powering smart mobile devices, is a leading developer of software for mobile phones and other mobile devices. Its products include a wide range of software for mobile phones at all price points. More than 39 million mobile phones, handhelds, and other mobile devices run PalmSource software. More than 45 companies worldwide have licenses to PalmSource software, including Fossil, Garmin, GSPDA, Kyocera, Lenovo, Palm, Samsung, Sony, and Symbol Technologies. Palm OS has given rise to a large community of users, enterprises, developers and manufacturers, who together make up the Palm Powered™ Economy. More information about PalmSource is available at www.palmsource.com, www.palmsource.co.uk, www.palmsource.fr, www.palmsource.de, www.palmsource.com/es and www.palmsource.com.cn.

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS: 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 regarding the Palm OS operating system, Palm OS application developer community and Palm OS applications. 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 ability of the Palm OS to perform as designed and to provided the anticipated features and benefits; our ability to continue to maintain and support our application developer community; the ability of our application developer community to create new market opportunities using open-standards-based software development environments and to produce applications that enhance the value and capabilities of Palm Powered devices; our ability to realize the anticipated benefit from the expected increased value and capabilities of Palm Powered devices; 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 Annual Report on Form 10-K for the period ended June 3, 2005 and our Quarterly Report on Form 10-Q for the period ended September 2, 2005. 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.


Copyright © 2005, PalmSource, Inc.

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Maureen O’Connell

PalmSource, Inc.

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