Palm
Palm's easy-to-use mobile products—Palm Treo and Centro smartphones, Palm handhelds, services, and accessories—help consumers and mobile professionals stay connected and on the go.
http://palm.com/products/

Palm Info Center
Palm Treo and Centro Software, Accessories, Reviews, News and Forums. The latest on Palm Handhelds, Palm OS and Windows Mobile Smartphones from Palm.
http://www.palminfocenter.com

Mobile Generation Software
Offers freeware and shareware including MobileDB and Mobile Account Manager for the Palm user. Developers of PalmOS software for the PalmPilot, Palm III, Palm IIIx, and Palm V.
http://www.mobilegeneration.com/

Palm OS Developer Documentation
Official file format specs for Palm Database (PDB), Palm Resource (PRC), and Palm Web Clipping Application (PQA) files, as well as full SDK, Conduit, and web clipping documentation.
http://www.palmos.com/dev/tech/docs/

Palm OS Network Programming
Just in time for the wireless revolution comes the first complete guide to creating network applications for the Palm computing platform. Palm OS Network Programming covers the Palm Net Library and networking concepts such as transport protocols and ...
http://www.oreilly.com/catalog/palmosnetpro/

Virtual Palm Encyclopedia
The Virtual Palm Encyclopedia provides a wealth of information on a wide variety of topics relating to palms, and includes lots of palm photos and palm-related links.
http://www.plantapalm.com/vpe/vpe_index.htm

Palm OS: Developer
The official development site by Palm, originators of the PDA. Articles, help information, source code, the SDK, the Palm OS Emulator (POSE), Debugging ROMs, are available here.
http://www.palmos.com/dev/

Palm Programming: The Developer's Guide
Emerging as the bestselling hand-held computers of all time, PalmPilots have spawned intense developer activity and a fanatical following. Used by Palm in their developer training, this tutorial-style book shows intermediate to experienced C programmers...
http://www.oreilly.com/catalog/palmprog/

ChaosSync for Palm
Palm pilot users can replace Palm Desktop with Time and Chaos
http://www.chaossoftware.com/chaos32-plugins-tc2palm.html

Palm Programming
Palm Programming Tutorial helps you develop mobile and wireless applications for the PalmPilot and other Palm OS platforms. This Palm development tutorial requires Palm SDK, PRC-Tools and PilRC.
http://mobile.eric-poncet.com/palm/tutorial.html