Steg software uses steganography and cryptography to conceal information in uncompressed and compressed images. It supports common image formats like JPEG, TIFF, PNG, and BMP and can apply either symmetric or asymmetric key cryptography. Written in C++.

I developed Steg in my spare time for fun and to learn the basics of the Qt Framework. Most importantly, Steg runs on GNU/Linux, Microsoft Windows, and Apple Mac OS X, making it an incredibly versatile software.
Version 1.0.0.2: See website: http://fabionet.org