AWS Encryption SDK
UTF-8 Multi-pass Tableau de Vigenère Encryption Rotation Engine
Decrypt encryptions without knowing the key or cipher
Crypt encryption and decryption is based on ASCII Table Shift.
A tiny, fast encryption tool in C
SES brings back the uncrackable onetime pad, with a digital twist.
ISC lets you encrypt & decrypt text and files of any type up to 4GB
Substitution cipher toolkit (en/decryption + automatical cracking)
Decrypt messages encrypted with a substitution cipher
An encryption software using C# 4.0