project-gc is a site with the goal to provide statistics and tools for all the geocachers in the world. this will be the go to place for charts, top lists, statbars, compares, achievements and map tools.

waymarking.com is a way to mark unique locations on the planet and give them a voice. while gps technology allows us to pinpoint any location on the planet, mark the location, and share it with others, waymarking is the toolset for categorizing and adding unique information for that location.

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certitude is a tool used to validate solutions for geocaching puzzles.

geocaching tools designed with geocachers in mind! coordinate conversion, mapping tools, number tools, ciphers solvers, and code conversions. anyone looking for help with solving or creating puzzles or placing caches, you'll find help here! designed to be viewable on both desktop and on mobile!

there are millions of geocaches hidden around the world—there are probably some near you right now. get the free official geocaching app and start finding them.

geocachingtoolbox.com. all geocaching tools a geocacher needs in one box: a lot useful geocaching tools, links, html tips and more.

search over 450,000 trails with trail info, maps, detailed reviews, and photos curated by millions of hikers, campers, and nature lovers like you.

kryptografie (altgriechisch: krypto für 'verborgen, geheim' und grafie für 'schreiben, schrift') ist ein teilgebiet der kryptologie und befasst sich mit dem verschlüsseln von informationen.