Associations
- Geocaching – Groundspeak, Inc.
- TrigpointingUK – Trigpoint Logging System
- GAGB – Geocaching Association of Great Britain
Caching Dictionaries
- Geocaching.com – Groundspeak’s dictionary
- Geocaching Junkie – A blog of the travels and adventures of a Geocacher
Other Groups
- Manx Geocaching – The incredibly friendly cachers of the Isle of Man
- Geocaching Ireland – A great group of welcoming cacherss
- West Midlands Mega – 2022’s Geocaching Mega Hosts
Puzzles
Snag the Tag
- Snag the Tag – Hunt the Tag and Snag a prize
- Snag the Tag Twitter account – Twitter account for Snag the Tag
- Snag the Tag on Face book – Facebook page for Snag the Tag
Tools
- Project GC – A host of online tools and stat generators
- Geocaching Toolbox – A pretty comprehensive online tool set for Geocaching
- GSAK (Geocaching Swiss Army Knife) – Windows Geocaching management tool
- iCaching – Mac Geocaching management tool
- Open Cache Manager – Linux Geocaching management tool (Free & Open Source)
- Groundspeak Wiki – Regional Geocaching Policies for the UK & useful guidelines
- Lab2GPX – Generates a GPX file containing Geocaching Adventure Labs
- TBScan A quick and easy way to scan and enter Trackables