Secure Enough is a simple application for saving small text files using a cipher. It can be used to keep low security passwords/notes from prying eyes. It was originally designed to help me keep track of the hundreds of passwords I have for different web sites and passwords for work. It syncs up with Google Docs, so I can access My Passwords from any connected computer.
Secure Enough is not meant for storing sensitive information such as the launch code to ICBMs. There are many easy ways to get around its 'security', e.g., memory scanners and key loggers. However, it is probably secure enough for some kind of personal use - use your own discretion.