OpenPuff is a Free Steganography and Watermarking software tool. As the name suggests, it can be used to Watermark Photos, Images, and Pictures. It can also be used to Encrypt or Hide Data in a file. The hidden data or messages can then only be accessed by entering the proper password.
SteganoG is a Portable Application that allows you to hide information or store confidential data in a bitmap image file. The image is used to safe guard your data by appearing as just an image to the viewer. Data stored in the bitmap image is compressed, encrypted and password protected. The tool can be used to both hide and to extract the data or information from the image. The BMP image is simply used as a non conspicuous carrier and storage container for your data.
USB Encryption with TrueCrypt – Portable Data Protection: Need a reliable way to encrypt your sensitive data on USB drives or external storage? This open source disk encryption software that allows you to securely encrypt files and folders on USB flash drives, portable storage devices, and hard disk partitions. Designed for on the go security, TrueCrypt supports traveler mode, meaning it can be launched directly from your USB drive without installation on the host system.