DAFFTIN Cryppie - is a small, yet useful tool that can protect any type of file by completely encrypting its content with wide known BLOWFISH algorithm.
A powerful shareware encryption utility that allows you to create a virtual encrypted drive on your PC. Has an intuitive and easy-to-use interface. Hide & encrypt your important files and folders using strong 448 bit encryption! Vista Compatible.
Crypt4Free (freeware) is files encryption software with ability to encrypt files and text messages. Support for ZIP files and ability to secure delete sensitive files. Skinnable user friendly interface.
CryptoLab is a freeware cryptography application for Microsoft Windows, and incorporates text-based encryption / decryption through the use of plug-in cipher modules.
A free, open source, "on-the-fly" (OTFE) transparent disk encryption program. Using this software, you can create one or more "virtual disks" on your PC - anything written to which will be automatically, and securely, encrypted before being stored