Geocaching

PodCacher - A weekly audio show about geocaching.
http://podcacher.com/

GSAK (Geocaching Swiss Army Knife) - A geocaching and waypoint management tool. Major features include: multiple databases, sending/receiving waypoints to GPSr, Google maps, conversion to many mapping formats, PDA and HTML output. Runs on Win98, ME, NT, 2000, XP, Vista.
http://www.gsak.net/

Cacheopedia - A wiki-based online encyclopedia, reference, and guide.
http://cacheopedia.com/wiki/Main_Page

GPS - The Movie - A film based on GPS treasure hunting.
http://www.gpsthemovie.com/

My Geocaching Profile.com - Allows geocachers to create a detailed geocaching profile that displays their cache statistics and special accomplishments in a clear, attractive layout.
http://www.mygeocachingprofile.com/

GeoCaching Flickr Group - Brings related pictures, discussions and a map.
http://www.flickr.com/groups/geocaching/

Geocache simulator - Features a simulator that enables you to navigate a GPS while training geocaching.
http://web.telia.com/~u32007998/geocache/

Handicaching - Aims to improve the accessibility of geocaching for physically handicapped people all over the world.
http://www.handicaching.com/

GeoLex - The Lexicon of Geocaching - Features a glossary of geocaching terms.
http://geolex.locusprime.net/

Geocache Rating System - Tool for helping geocachers rate the overall and terrain difficulty of their hidden caches.
http://www.clayjar.com/gcrs/

GeoBuddy - Geocaching software that displays all the geocaches in your area over topo maps and aerial photos for trip planning.
http://www.geobuddy.com/

Local Geocache Groups - Directory attempts to show known local geocache groups from around the world.
http://www.geocities.com/geocachegroups/

Cache-A-Maniacs - Features recorded episodes in a candid, uncut, and irregular form with a member of the Geocaching community.
http://www.cacheamaniacs.com/

Buxley's Geocaching Waypoint - Explanation of the sport, collection of recent news stories, maps of cache locations, FAQ, and announcements of geocaching parties and events.
http://www.brillig.com/geocaching/

CacheboxStore.com - Providing a resource of geocaching containers, travel bugs, and accessories.
http://www.cacheboxstore.com

EarthCache - A special place that people can visit to learn about a unique geoscience feature or aspect of our Earth.
http://www.earthcache.org/

Boulter Geocaching - Has several useful tools such as coordinate converter and mapper, quick search, coordinate grabber, distance calculator, Bay Area geocaching leaders, expertGPS calibrated maps and geocaching express logger.
http://www.boulter.com/geocaching/

GeoCacher - GeoCaching South Africa - Features general information about geodashing, etiquette, creed, safety tips, and a fanshop.
http://www.geocacher.co.za/

CacheMate - Geocaching database for Palm OS, Pocket PC, and Windows Smartphone.
http://www.smittyware.com/intro/cachemate/

Saudi_Cacher - Stories of found and placed caches in the Middle East.
http://saudicacher.blogspot.com/

GPS Adventures - Learn about traditional and modern navigation, explore ways GPS is used, find out where the technology is heading in the future, and discover geocaching.
http://www.gpsmaze.com/

geo-*: Rick Richardson's Linux tools for geocaching - A set of tools to be used in a batch or cron mode to establish normal caching routine, backup caches and cache logs as well as enter new waypoints, a free geocoder and create custom maps of waypoints.
http://geo.rkkda.com/

Waymarking - Provides tools for you to catalog, mark­ and visit interesting and useful locations around the world.
http://www.waymarking.com/

Skrýšotlač (CachePrinter) - Free Java-based programme used for downloading and printing listings of geocaches from geocaching.com and export their coordinates to GPX format.
http://cacheprinter.bubbles.sk/

CacheMagnet - Open source geocaching waypoint management software.
http://cachemagnet.googlepages.com/

GPSgames.org - Features a variety of games involving use of GPS receivers, including geocaching, geodashing, minutewar, geopoker and geogolf.
http://gpsgames.org/

TerraCaching - Caches rated by members to encourage memorable and challenging hunts. Includes a wiki, map, and how to become a member section.
http://www.terracaching.com/

GeoQO - A free geographical waypoint management software set that lets you manage geocaches and other types of geographical data.
http://www.geoqo.org/

Navicache - Provides a wide range of information and listing resources for the geocaching enthusiast including worldwide cache listing.
http://www.navicache.com/

The Geocachers Creed - Designed to help orient new players to the ethos of the community and to guide experienced players in questionable situations.
http://www.geocreed.info/

Geocacher University - Provides information about basic caches, equipment, events, resources, photos, items for sale and links.
http://www.geocacher-u.com/

Tourality - A freeware GPS game for mobile phones that leverages the Geocaching concept and additionally suppports real-time multiplayer games.
http://tourality.com/