CipherClerk's Applet - List Of Ciphers
Substitution Ciphers
Monomic, monoalphabetic substitution:
Monomic, polyalphabetic substitution:
Dinomic, monoalphabetic substitution
Transposition Ciphers
Fractional Sustitution Ciphers, Combined Substitution/Transposition Ciphers
Cipher Devices & Machines
Other Ciphers
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ROT-13 encoder / decoder
Actually, not really a cipher - but usefull anyway!