Hide data in graphics or sound files with these programs.
dc-Steganograph A very small DOS-based program that hides data in PCX images. Freeware. (http://members.tripod.com/~Nikola_Injac/stegano/)
Gif-It-Up Hides data in GIF files. (No installation support.)
Hide and Seek Encrypts data using Blowfish and then hides it in GIF files. Freeware.
Hide4PGP Works with PGP to encrypt and hide data in bitmap or sound files. Freeware. (http://www.heinz-repp.onlinehome.de/Hide4PGP.htm)
Hide in Picture Hides and encrypts data in a bitmap file. Freeware. (http://www16.brinkster.com/davitf/hip/)
Invisible Secrets Hides files in other files not usually suspected of encryption, including JPEG, PNG, and BMP. (http://www.invisiblesecrets.com/)
MP3Stego Hides data in MP3 audio files. (Includes C source code.) Freeware. (http://www.cl.cam.ac.uk/~fapp2/steganography/mp3stego/)
S-Tools Hides data in bitmap, GIF, or WAV files. Freeware. (http://members.tripod.com/steganography/stego/s-tools4.html)
Steganos Security Suite Encrypts email using ordinary encryption or steganography to hide your email from prying eyes and can shred files beyond recovery. Trialware. (http://www.steganos.com)
wbStego Hides data in graphic, ASCII, HTML, or Adobe Acrobat files. Trialware. (http://wbstego.wbailer.com/)
Stego Hides and recovers encrypted data in GIF files. Free (Open Source). (http://www.stego.com/)