Geocaching.com:Includes large database on caches to hunt down, along with general information on geocaching.
Buxley's Geocaching Waypoint: Explanation of the sport, collection of recent news stories, maps of cache locations, a FAQ, and announcements of geocaching parties and events.
CacheMagnet: Open source geocaching waypoint management software.
CacheMate: Geocaching database for Palm OS and Pocket PC.
Cacheopedia: Wiki to create an online encyclopedia / reference / survival guide for geocaching. It is a source for geocaching FAQs, articles, guides, and a whole lot more.
Caching Adventures: Caching Adventures is a community for geocachers. Each user has their own blog and can submit articles and participate in forums.
CachingCentral: Weblog related to the hobby of geocaching and use of GPS.
Geo-* - Linux tools for Geocaching: Provides free Linux software for the activity.
Geocache Rating System: Tool for helping geocachers rate the overall and terrain difficulty of their hidden caches.
Geocacher University: Provides information about basic caches, equipment, events, resources, photos, items for sale and links.
Geocaching Zone: General weblog about the sport of geocaching and GPSr.
geochums: Geocaching community with varoius forums including events, travel bugs, and geocoins managed through Northeast Ohio with members from multiple states.
GeoLex: The Lexicon of Geocaching - glossary of geocaching terms.
GeoSnapper - GPS Photography: Enables users to upload and distribute accurately geo-referenced digital photographs using a camera and a GPS receiver.
GPS - the movie: "GPS" is the first film based on gps treasure hunting. Come check out our suspense/thriller and play the game.
GPSgames.org: Features a variety of games involving use of GPS receivers, including geocaching, geodashing, minutewar, geopoker and geogolf.
Handicaching: Handicaching aims to improve the accessibility of Geocaching for physically handicapped people all over the world.
Local Geocache Groups: Directory attempts to show all known local geocache groups from around the world.
MovingCache.com: Features exciting point system to foster an environment of excitement while moving a cache to keep the game quite creative
Navicache: Provides a wide range of information and listing resources for the geocaching enthusiast including worldwide cache listing.
Podcacher: A family friendly, weekly audio show all about Geocaching!
TerraCaching: Offers smaller amount of caches to acheive more challenging hunting with tools to empower even the new geocacher.