Free File Encryption Software
Blowfish Advanced CS 2.57
A file encryption and security tool for the Windows platform that supports a number of different encryption algorithms.
4t HIT Mail Privacy LITE 1.01
4t HIT Mail Privacy Lite provides a quick and easy way of protecting your communications by embedding your text into an image, combined with a particularly strong encryption method, you can be assured your mail is safe.
TrueCrypt 3.1a
On-the-fly encryption software, which can create a virtual encrypted disk within a file and mount it as a real disk. It can also encrypt an entire hard disk partition or a storage device such as USB memory stick. TrueCrypt supports plausible deniability.
Dekart Private Disk
This is a free (for personal use)encryption program for making encrypted volumes.
AxCrypt
AxCrypt is free and easy to use open source strong file encryption for Windows 95/98/ME/NT/2K/XP, integrated with Windows Explorer. Encrypt, compress, decrypt, wipe, view and edit with a few mouse clicks. Cryptographic primitives are AES-128 and SHA-1.
ccrypt
ccrypt is a command-line utility for encrypting and decrypting files and streams. Available for many platforms in source code and binaries.
Crypto-Lock
Crypto-Lock is a program that will compress and encrypt your files producing either self-decrypting files or encrypted modules.
mcrypt
mcrypt is a command-line encryption tool that support multiple encryption algorithms modes and is available for windows and linux.
Crypt Edit
A multipurpose text editor / word processor that features MS Office compatibiliy, encryption of binary files with compression, full OLE support and a host of other features. Crypt Edit requires Windows 95 OSR2, Windows 98/2000 or Windows NT 4.0 or later to run.