Palm has now sold nearly 10.9 million organizers, with many more handheld products using its operating system.

BBC: Palm sales double

Graffiti is only available for devices that use Palm OS, 3Com's outstanding and highly intuitive operating system for handheld devices.

FORBES: Scratch pads

However, unlike the Bell South packet network used by such devices as the RIM pager and handheld products, the Palm operating system is not able to have e-mails pushed down to it automatically.

CNN: HandSpring gains wireless Web access

Apple may be a cult sensation of sorts in the handheld device market, a media darling, but when it comes to smart phones, no one touches the Android operating system by Google.

FORBES: The World's Largest Android Market, And Getting Bigger