Many useful programs can be found in Internet archives. Some of the better ones include the following:

• http://www.stegoarchive.com

• http://crypto.radiusnet.net/archive

• http://www.cl.cam.ac.uk/~fapp2/steganography

• http://www.geocities.com/Paris/9955/priv.htmI

• http://www.student.seas.gwu.edu/~sowers/digwat.html

• http://www.isse.gmu.edu/~njohnson/Steganography

• http://www.watermarkingworld.org

• http://www.funet.fi/pub/crypt/steganography

• http://glu.freeservers.com/stegano.htm

Specific software packages available on the Internet are listed here.

http://www.stego.com Romana Machado distributes the Java version of her Stego and EzStego software from here. This cross-platform tool hides information in the least significant bit of an image after the colors in the image are sorted. This usually works quite well, but there can be some inconsistencies. See Sections 9.2 and 17.4. The software is distributed with the GNU Public License.

http://wwwrn.inf.tu-dresden.de/~westfeld/f5.html Offers the F5 software used for hiding information in JPEG images and includes a number of enhancements designed to avoid steganalytic techniques discovered by the creator, Andreas Westfeld [Wes01, WP99].

http://www.mcdonald.org.uk/StegFS The source for the Steganographic File System described in Section 4.4. This software works well with Linux file systems and can probably be extended to any other file systems with some work. It is released under the GNU GPL.

http://www.smalleranimals.com/stash.htm The StashIt software hides data in the least significant bits of images with five different techniques. There is no charge for the software.

http://www.darkside.com.au/snow The Snow software developed by Matthew Kwan will insert extra spaces at the end of each line. Three bits are encoded in each line by adding between 0 and 7 spaces that are ignored by most display programs including Web browsers.

ftp://ftp.csua.berkeley.edu/pub/cypherpunks/steganography/mandelSteg1.0.tor.Z The MandelSteg software hides information in the least significant bit of an image of...