OpenStego is a tool implemented in Java for generic steganography, with support for password-based encryption of the data. It supports plugins for various steganographic algorithms (currently, only Least Significant Bit algorithm is supported for images).
You can download it from the following link: https://packetstormsecurity.com/files/download/140374/openstego-0.7.0.zip
Source: https://packetstormsecurity.com/files/140374/OpenStego-Free-Steganography-Solution-0.7.0.html