Freeware Descriptions:
Hide & Reveal is both an open-source steganography software and a java library distributed under the GPL.
Here is complete features (taken from authors site):
It is primarily designed for scientists wishing to experiment new hiding techniques or steganalysis on various carriers.
Features:
- Distributed under the GNU Public License
- Pure Java
- Multi-threaded (why? Because it is possible!)
- Allows to hide any type of file within PNG images (more carriers to come…)
- Hiding and revealing assistants
- Uses all algorithms provided by the org.steganography library
- Internationalized (english, french)
Requires Java Runtime Environment. Get It Here.
What’s New in version 1.2.6:
- Fixes error when selecting a manual hiding scheme (not in *automatic* mode)
- Now loads carrier image once in automatic mode
- Uses steganography library version 1.3.2
- Minor graphical modifications on main buttons

File Size / OS:
- 2.48 MB / Windows 9x - ME - 2000 - NT - XP - 2003 - Vista
Download Hide and Reveal 1.2.6: