Guardian

Guardian is a password manager. With Guardian, you can store all your passwords safely into a database on your computer. Therefore, the only password that you will have to remember is the master password used to log in to your account in Guardian and access your database.

Screenshots

       

From left to right: Login Screen, Main Window, Password Generator.

Usage

Guardian has integrated help, if you need any help in using it click the "Help" link in the top right corner of any window. A tutorial will open in your web browser.

Features

Depending on what your password is it would take a different amount of time to crack it. For example, a simple password made out of 8 letters would take about 5 hours, another one of 8 letters and numbers would take 3 days and a complicated one made out of 12 characters that are letters, numbers and other symboles could take up to 600 thousand years.
A password generator is a very useful tool if you want a secure password, and Guardian has one.

Also, just to be safe you can check out the User Log to see if your account has been accessed by anyone else.