Invisible Secrets 4 hides your private data into innocent looking files, like pictures, or web pages.
It also features: strong encryption algorithms; a locker that allows you to password protect certain applications; a password management solution and a real-random password generator; a shredder that helps you destroy beyond recovery files, folders and internet traces; the ability to create self-decrypting packages; secured password transfer.
Version 4.6 features: Windows Vista compatibility. Free trial. (more)