1)   LockTheFile 1.8
LockTheFile encrypts the content of your important files from hackers and other users. You may protect any information - text files, pictures, video and audio files.

 2)   Encrypt a text file or encrypt multiple text files within images 2.0
Encrypt text within images easily. Simply cut and paste the text you wish to hide, and then your image, and voila! You are done!