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• Home: Consumer Information: Sports and Recreation: Outdoors: Global Positioning  (3)
• Recreation: Outdoors: Letterboxing  (49)
• Science: Earth Sciences: Geomatics: Global Positioning System  (43)
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• Shopping: Recreation: Outdoors: Geocaching  (5)
• Sports: Orienteering  (71)

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• Geocaching.com   - Includes large database on caches to hunt down, along with general information on geocaching. Enables to hide and seek a cache, find a benchmark or trackable items.

• 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.
• 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.
• Cache-A-Maniacs - Features recorded episodes in a candid, uncut, and irregular form with a member of the Geocaching community.
• Cachebox.110mb.com - Providing a resource of quality geocaching containers, travel bugs, and accessories.
• CacheMagnet - Open source geocaching waypoint management software.
• CacheMate - Geocaching database for Palm OS, Pocket PC, and Windows Smartphone.
• Cacheopedia - A wiki-based online encyclopedia, reference, and guide.
• EarthCache - A special place that people can visit to learn about a unique geoscience feature or aspect of our Earth.
• 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.
• GeoBuddy - Geocaching software that displays all the geocaches in your area over topo maps and aerial photos for trip planning.
• Geocache Rating System - Tool for helping geocachers rate the overall and terrain difficulty of their hidden caches.
• Geocache simulator - Features a simulator that enables you to navigate a GPS while training geocaching.
• GeoCacher - GeoCaching South Africa - Features general information about geodashing, etiquette, creed, safety tips, and a fanshop.
• Geocacher University - Provides information about basic caches, equipment, events, resources, photos, items for sale and links.
• The Geocachers Creed - Designed to help orient new players to the ethos of the community and to guide experienced players in questionable situations.
• GeoCaching Flickr Group - Brings related pictures, discussions and a map.
• GeoLex - The Lexicon of Geocaching - Features a glossary of geocaching terms.
• GeoQO - A free geographical waypoint management software set that lets you manage geocaches and other types of geographical data.
• GPS - The Movie - A film based on GPS treasure hunting.
• GPSgames.org - Features a variety of games involving use of GPS receivers, including geocaching, geodashing, minutewar, geopoker and geogolf.
• 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.
• Handicaching - Aims to improve the accessibility of geocaching for physically handicapped people all over the world.
• Local Geocache Groups - Directory attempts to show known local geocache groups from around the world.
• Navicache - Provides a wide range of information and listing resources for the geocaching enthusiast including worldwide cache listing.
• PodCacher - A weekly audio show about geocaching.
• Saudi_Cacher - Stories of found and placed caches in the Middle East.
• Skrýšotlač (CachePrinter) - Free Java-based programme used for downloading and printing listings of geocaches from geocaching.com and export their coordinates to GPX format.
• TerraCaching - Caches rated by members to encourage memorable and challenging hunts. Includes a wiki, map, and how to become a member section.
• Tourality - A freeware GPS game for mobile phones that leverages the Geocaching concept and additionally suppports real-time multiplayer games.
• Waymarking - Provides tools for you to catalog, mark­ and visit interesting and useful locations around the world.