I'm using Mac OSX 10.4, with a Palm E2 & Bluetooth GPS. Not only do I have to find Mac SW, but it needs to work with Palm sw too.
Currently, I use CacheMate and CacheNav on the Palm. CacheMate stores all the cache info (including descriptions, logs, etc) and CacheNav does the GPS bit. On the Mac side, I use MacCMConvert to convert the GSX files (single waypoints and pocket queries too) to Palm DB files, then hotsync them over.
For maps, I rely on the geocaching.com map on the cache page. CacheMate doesn't do map overlays, so I'm out of luck there. If I find a Palm program that does map overlays, cache logging and nearest-caches searching (a la Cachemate), and the GPS navigation for caching, I'll be a happy camper.
