Steganography
Steganography: an excellent method of embedding information on the contents of the file within another file! Make your secrets invisible in just 3 quick steps! Steganography enables you to use digital data hiding techniques (steganography) to hide files and messages within other files... securekit. ... For more information, please visit http://www. ... com . ... This allows you to encrypt sensitive information, while at the same time hiding it in a file that will not look suspicious, so nobody even knows that there is any encrypted information.
http://www.securekit.com/sg.exe - 1Mb - Download - Screenshot

Steganography Premium
Use steganography and digital watermarking techniques to encrypt / encryption any file in any other file. Often used to hide data / messages in image files / photographs (JPG, BMP etc) , but this software allows you to hide any file type (jpg, bmp, txt, zip, dbf) into any other file type... practically anything).
http://www.clickok.co.uk/steg/steg.zip - 2Mb - Download - Screenshot

1-2- Free Steganography
1-2- Free Steganography Invisible Secrets allows you to encrypt and hide files in other files (carriers) which are not suspect of encryption (JPG, PNG, BMP). First, It will encrypt the sensitive data using a specified password and cryptosystem (algorithm). ... The resulted carrier (which contains the real message) can be attached to an email message (which is a fake message), or published on a web page near hundreds of other pictures (or other carriers) from where the addressee (the only person who knows which is the right image) can download it without revealing his/hers identity.
http://www.neobytesolutions.com/downloads/invsecr2.exe - 2Mb - Download - Screenshot

Stealth Files
Stealth Files hides any type of file in almost any other type of file. This is called steganography. This is a way of encrypting data so that it is hard to find. You can not decrypt something unless you know what to decrypt. Using steganography, Stealth Files compresses, encrypts, and then hides... You will still be able to view, open, and run these files without and problems. ... If you want to, you can also use a password to encrypt the hidden files.
http://www.froebis.com/cgi-bin/download.cgi?sf40e.exe - 2Mb - Download - Screenshot

Unbreakable Encryption Software
New encryption software package featuring a completely uncrackable encryption scheme. This tool is designed for the requirements of the undercover agents working in foreign countries, but may be extended to be used by journalists, lawyers, doctors, military personal etc. ... Through its combination of encryption and invisibility of the encrypted data, steganography offers complete protection from data espionage. ... With steganography, messages can be hidden in image files before being sent. ... atspace.
http://www.geocities.com/otp_description/cyberprotect.pdf - 2Mb - Download

Max File Encryption
When sending sensitive information via e-mail, you assume the risk that your info might be intercepted. Even if you use a secure connection to your mail server, the route of your message between mail servers is out of your control. You should know that it is not secured in any way. ... There is a method called steganography. ... Use Max File Encryption's steganography mode when you don't want your secure containers to look like containers. ... The only difference is that most archives are not that secure.
http://www.softeza.com/download/maxfileencryption.zip - 1Mb - Download - Screenshot

Puffer
Puffer is a general purpose 256-bit AES encryption utility for protecting your most sensitive data. Use Puffer to securely exchange email with other Puffer users via the 2048-bit Diffie-Hellman key exchange function. Compress and encrypt your data files into zip-style PUF archives. ... Use steganography to hide data among the pixels of image files. ... Distribute self-decrypting archives to non-Puffer users. ... Permanently erase data with wipe functions.
http://www.briggsoft.com/download/puf32.exe - 1Mb - Download - Screenshot

Hider
Hider is a special steganography application used to encrypt and hide files within image, audio and video files. Files hidden with Hider are not only undetectable, but irretrievable as well. Hider uses advanced technology to protect files including: 256-bit encryption algorithm - Rijindael,... Images and audio/video clips containing hidden files are fully functional and are identical to the original one. ... You can secure any file type with Hider.
http://www.amosoft.net/en/hidersetup.exe - 1Mb - Download - Screenshot

PSM Encryptor
PSM Encryptor is a cryptography and steganography tool. PSM Encryptor will encrypt any group of files (including whole directory structures) but will also disguise the resulting encrypted archive as a working sound or image file. Unlike competitors who just wrap a model around encrypted files,... We are developing variants of PSM Encryptor for corporate use. ... We customise corporate versions free of charge. ... Please contact us for details. ... An entirely graphical freeware decoder can also be found on this site and on our own site.
http://demo.powersoftmakers.com/psme.zip - 7Mb - Download - Screenshot

Hermetic Stego
Hermetic Stego is a steganography program which allows you to encrypt and hide a message (the contents of any computer file) in another file so that the addition of the message to the container file will not noticeably change the appearance of that file. ... The bits of the message are inserted into the bytes of the image files randomly and in such a way as to defeat the use of statistical tests to reveal the presence of a hidden message. ... 3. ... The program can be used with a user-specified stego key or with a default stego key; use of a default stego key allows sending a hidden...
http://www.hermetic.ch/hst/hst_setup.zip - 3Mb - Download - Screenshot