Isteg

Isteg is an easy to use application that embeds one file into another. What I use it for and believe it is most useful for is to embed a zip file into an image, but the program doesn't bother checking filetypes to require you to do that.

Note: Archive programs that can read images with zip files inside of them: Winzip, 7zip. WinRAR says the file is corrupted. I have not tested this with any other programs.

Windows
Filesize: 529 kb
File format: zip