4t HIT Mail Privacy Lite
Sends and receives private data hidden in images of various types by using a strong encrypting algorithm.
ABC CHAOS
A program which is able to encrypt and decrypt files of every type and even whole directory structures using strong encryption.
ABI-Coder
File encryption software for Windows that uses 128-bit Blowfish and 192-bit Triple DES algorithms to encrypt files and folders with just a click of the mouse.
BitCrypt Free
A tool allowing for encryption of plain text within a bitmap image. [Win32]
Blowfish Plus 16384 bits
Encryption program based on the Blowfish encryption algorithm designed by Bruce Schneier.
Cif-Crypto and BlowCif
A small freeware "live-text" encryption tool for Windows platforms.
Cryptext
A shell-extension encryption program for Windows based on a combination of RC4 and SHA-1.
Crypto Anywhere - OpenPGP Edition
Allows for secure email encryption on the move, and can run from floppy or USB drive.
CryptoMail Service and Email System
Provides a free web-based email system (client/server, GNU) and service.
Cryptomathic File2File - Easy to use Desktop Encry
File2File allows a user to right click a file, choose to encrypt and set a password.
DataRescue
The aCrypt software allows the user to encrypt files and send them via email to others without the software.
FileEncryptor
A small and powerful freeware utility for encrypting files with the AES algorithm.
FineCrypt
Multiple ciphers and key manager integrated with the Windows shell.
HandyBits EasyCrypto
Creates self-extracting, encrypted files through the use of the common Blowfish algorithm.
Iron Key
Encrypts files using the industry-standard DES cipher and produces self-extracting Windows executable encrypted files, which can be sent safely over the Internet.
Recommended Tested Free Encryption Software
A collection of software that has been extensively tested, probed and scrutinised for weaknesses by a group of security experts.
ROT-13 Encryptor & Decryptor
Web form to encode and decode ROT13, a simple letter substitution encryption scheme.
Secure Hive Freeware
Encrypts files for archiving and sharing of parts of, or entire documents.
SecureTask
Professional task manager which allows for automatically performing various security-related tasks, such as automatic encryption, wiping, and system cleanup.
SiFEU
Encrypts files with the option of multiple passes, along with secure deletion of files.
TrueCrypt
Open-source free on-the-fly disk encryption for Windows XP/2000. It can encrypt partitions or create virtual encrypted disks within files. Implemented ciphers: AES, Blowfish (448-bit key), Triple-DES. Provides plausible deniability.