With the Open SSL 0.9.7c library, developers can write applications that take advantage of Secure Sockets Layer (SSL v2/v3), Transport Layer Security (TLS v1), and a full-strength general-purpose cryptography library. Security features such as data integrity, authenticity, and privacy can be implemented. To compile for Win32, Perl or compiling under Cygwin is required. Some of the encryption routines/algorithms are covered by patents.
Iron Key
A freeware program that encrypts files using the industry-standard DES cipher and produces self-extracting encrypted files, which can be sent safely over the Internet. No crypto software needs to be installed on the receiving side.
Max File Encryption
The program creates executable self-decrypting containers for your sensitive files. You or your recipient simply run a container and are prompted for a password. In addition, the program can hide your data into media files for maximum safety.
Cipherlok
Cipherlok is a data security product that provides easy to use yet highly secure encryption of files on your PC or notebook. Secure file deletion and automatic encryption features. Uses Blowfish algorithm and either passwords or our USB Tokens.
Advanced Encryption Package 2007 Professional
AEP20067 PRO most noteworthy feature may be its flexibility and military grade encryption: program includes 17 encryption algorithms (Rijndael, TWOFISH, BLOWISH, CAST, MARS, TEA, etc) to encrypt your files. It also includes file shredder. RSA supp.
wbStego4
Steganography tool. Hides any data in bitmap images, text files, HTML and PDF files. For the encoding and decoding process two user-friendly interfaces are provided. Ideal for transmitting data safely online and for adding copyright information.