KryptoFiler is an extremely easy to use bit of file encryption software. It allows you to quickly encrypt/decrypt very large files(in theory 14 TeraBytes - Windows limit ...), documents, and archives through major cryptographic standards.
I was easily able to encrypt a text file without a lot of fuss and it worked quite fast as well, the only thing that would improve on this solid program would be the ability to drag and drop the given document/file into the encryption/decryption fields. This has since been remedied by this on-the-ball author.
KryptoFiler's cryptographic standards include:
All the above along with the ability to Hash data through various secure algorithms including Haval 256, MD4, MD5, RipeMD-128, RipeMd-160, SHA1, SHA256, SHA384, SHA512, and Tiger.