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My Geocaching Profile
(Vigenere Breaker, Caesar Cipher Breaker, tracking challenge caches)

The Geocaching Toolbox
(code tables, cipher types, EXIF viewer, barcode and QR reader, numerical calculators)

(Deep bench cipher site with over 200 ciphers and multiple other puzzle tools like number calculators)

(Dozens of cipher types as well as a Cipher Identifier)

(Cipher identifier and cracker designed by a German cacher)