ISC lets you encrypt & decrypt text and files of any type up to 4GB
AES Encryption Program
A program to generate random reciprocal bigram tables
JCryptor is an encrypting tool based on the Caesar-cipher.
Simple application to encrypt and decrypt strings
Scramble files to enhance security
jEncrypt is a command line file encryption archiver
Simple and easy to use Java application to encrypt your files
Fast and Strong Data Encryption Algorithm