GoogleEarthTweaker for Windows

The description of GoogleEarthTweaker - Play With New Friends

If you use Google Earth to prepare for your Geocaching trips, then you'll know that it's often difficult to find the right caches and to see which ones you already visited. This program makes it easier by preparing your GPX files for Google Earth. Now you can see which caches you've already visited, which ones are out-of-order and which ones you own. Requires GPX files with the cache information.