JP Hide and Seek is actually two DOS-based programs, jphide and jpseek, that hide files inside JPEG images. One very unique feature of these programs compared with other steganography programs is these are designed to have a very low insertion rate, usually less than 5 percent, which maintains the quality of the image. A newer program is available, JPHSWin, which combines both programs with a Windows GUI.
Some tools have characteristics that are unique among stego-tools. In Versions 4.1 and 5.0 of Hide and Seek, the color palettes have a very unique characteristic that have yet to appear anywhere else. All color palette entries are divisible by 4 for all bit values.