1Password

1Password is my favorite and most used application. It is definitely one of those “you don’t know what you are missing until you use it” type of applications.

1Password stores all of your login information (usernames and passwords) for the websites you visit, credit card information, software serial keys, and secure notes. You will never forget your login information ever again because you will never need to remember it. All you need to know is your “1 password” to access all of your other information. Additionally, 1Password comes with browser plug-ins so you can have your username and password automatically filled in—after typing in your “1 password.”

You can try or buy 1Password here.