Links to usefull web sites for geocaching, especially mystery caching.

• CryptoPrograms online (from CrypTools online)
• Pi, e, phi to millions of places:
• Geocaching Toolbox
• Rumkin ciphers
• Practical Cryptography
• Anagram solver
• NetteLeut(h)e - GC Tools (German)
• Teal's Nongram solver
• The American Cryptogram Association
• American Cryptogram Association - list of ciphers
• Bill's Security site (Codes and calculators)
• The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

Cipher Types described by the American Cryptogram Association. A great source of information for understanding the workings of the ciphers (highlighted ciphers are inplemented in the Mystery Toolbox. = passed ACA test cipher)