The Pocket PC Geocaching Tools (or short: PPC-GC-Tools) are your (almost) one for all solution, if you want to go geocaching without tons of printouts (paperless). It uses an offline database, namely a GSAK database, so you won't need online access. See Features for more info.

Still you can donate an amount of your choice on the download page.

A navigation software. It doesn't support any GPSr. It will not show you the direction to a cache.