Simple tool for file encryption and folder content encryption with AES 256. Files can also be hashed with a SHA1 signature. A commandline version is available as well as a GUI version. One other useful feature is to encrypt messages for emails.
Cryptomni is a program which can encrypt and decrypt files using the one-time pad cipher. If a key is truly random, kept secret, and never reused, this encryption algorithm can be proven to be unbreakable.