» 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.
