Pyrite Publisher is a tool to convert documents to and from the Doc format used by electronic books for the Palm PDA. Compressed zTXT files are also supported. Pyrite Publisher is written in Python, with an optional module in C for enhanced data compression performance.
Pyrite is available from http://www.pyrite.org
Malsync is a command line tool for synchronising Palm PDAs with the AvantGo server. AvantGo is a - well, you'll know what it is if you use it. Unfortunately the website is a masterpiece of marketspeak.
Malsync is available from http://www.tomw.org/malsync