CS110 Course notes: CS110 is a course in assembly language, whose target platform is the Palm Computing Platform
DB Viewer: View the contents of .pdb/.prc databases on the PalmPilot.
HackMaster API: How to write a HackMaster hack.
Handspring: Developers: Area for those that want to develop applications for the Handspring Visor or for Visor Springboard modules.
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.
Palm Programming: The Developer's Guide: Used by Palm in their developer training, this tutorial-style book published by O'Reilly shows intermediate to experienced C programmers how to build a Palm application from the ground up.
palmdeMON: An interactive disassembler and resource previewer for Palm binaries, and derivatives using the Motorola DragonBall processor.
Pilot Software Development by Darrin Massena: A no longer maintained software development page. Still contains a lot of useful information.