VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
Steghide - Steghide is a steganography program that is able to hide data in various kinds of image- and...
Easy File Locker - Easy File Locker is a pretty small file at 224KB and will do exactly what it says.
Openstego - OpenStego is a tool implemented in Java for generic steganography, with support for password-based...
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
QuickStego - With the progress of community, information transmission becomes quicker and more effortless.