Waypoint management software
From GeoWiki
Waypoint management software allows you to keep lists of geocaches on your computer. Depending on your computer setup, you could download waypoints in GPX format to your GPS and cache descriptions to your PDA. This saves you from re-typing coordinates and printing out huge volumes of paper.
The most popular waypoint management software packages are:
Windows
- GSAK - Sorts caches, marks, links to map, etc. Windows, Supports [GCA] [GPX]
- CacheMate
- Cetus GPS
- Clayjar Watcher
- EasyGPS
- GPS Babel - Converts almost any format to any other.
- GPS Connect
- GPX Spinner
- GPXSonar
- GPXView
Mac
Pocket PC
Palm
Overall, Aussie cachers prefer GSAK, partly because it's made by Western Australian geocacher ClydeE, but mostly because it works well! The Geocaching Australia Forum has a support thread on GSAK.