HackMaster API  
   How to write a HackMaster hack.
   http://www.daggerware.com/hackapi.htm

Pilot Software Development by Darrin Massena  
   A no longer maintained software development page. Still contains a lot of useful information.
   http://www.massena.com/darrin/pilot/index.html

CS110 Course notes  
   CS110 is a course in assembly language, whose target platform is the Palm Computing Platform
   http://cse.stanford.edu/class/cs110/

DB Viewer  
   View the contents of .pdb/.prc databases on the PalmPilot.
   http://www.righto.com/pilot/db.html

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.
   http://www.oreilly.com/catalog/palmprog/

Handspring: Developers  
   Area for those that want to develop applications for the Handspring Visor or for Visor Springboard modules.
   http://www.handspring.com/developers/

Wade's Pilot Programming FAQ  
   An overview of the ways you can program the Palm/Pilot along with commentary and links for getting started.
   http://flippinbits.com/twiki/bin/view/FAQ/WebHome

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/

palmdeMON  
   An interactive disassembler and resource previewer for Palm binaries, and derivatives using the Motorola DragonBall processor.
   http://palmdemon.youceff.com/