How do you balance the necessity of highly secure passwords with the utility of easily recalling them all? The only secure password is one that you can't remember, but there are times when you can't use a password manager and need to rely on your memory.
Tutorial: Create a Beautiful Password Strength Meter. In this tutorial we will be creating a beautiful password strength indicator. It will determine the complexity of a password and move a meter accordingly with the help of the new Complexify jQuery plug
zxcvbn: realistic password strength estimation | Dropbox Tech Blog