Selected File: Blowfish Advanced CS Encryption
Software by Markus Hahn
available versions :
Blowfish-ACS v2.13 Freeware
One of the nicest file encryption tools, also freeware and open source. It is not actively developed right now, yet still a good tool for any Win32 platform and an opportunity to get an inside look into such a software. Source Code
http://maakus.dyndns.org/software.html