Bork is a very small, cross-platform file encryption utility. It is written in Java and designed to be included along with the files it encrypts for long-term storage (eg on CD-R). Its minimal external dependencies make it fairly futureproof.
Flash/PHP adaptation of the XTEA encryption algorithm. Allows encryption/decryption of sensitive data using 128-bit key. May be used for network data (HTTP) or offline for implementations like secure CD-ROM projects.
Md5some aims to be a clone of the Gnu md5sum utility, which the additional (and seemingly unique) feature of being able to directly calculate the md5sum of a CD under Windows. It's written in C and builds on Gnu/Linux and Cygwin/Windows.