There are several Bible reading applications available for PalmOS. I have tried out almost all of them. However, I always seem to come back to Bible+. One of the best things about this application is that it's free, which is surprising considering how feature rich it is. Unfortunately, it seems future development has pretty much ceased. However, it works as it is supposed to on most, if not all, current Palm devices. There are quite a few Bible versions and other available for Bible+. They can be found on the PalmBible+ website or at Gospelshare.
