From Bit Per Second:
sText is super fast and powerful, secure word processor / text editor.
Its key feature is the ability to lock your files with your own keyword.
You can now hold secured your secrets, passwords, logins and others strictly unlockable!
Also you can exchange information with other persons strongly secured, without a risc of exposure to third persons. Even if third person has your file, without the keyword it is impossible to unlock the information.