A password manager is a software application that helps users keep track of their passwords. Usually these applications store your passwords in an encrypted database that uses a single strong password to encrypt them.
From a security perspective think about how many times you use the same password for multiple websites. If one of those websites is compromised and your password gets leaked it can unlock all of the other websites you access. Using a password manager will allow you to create unique passwords for each website you use and prevent this from happening.
A few of our favorite password managers are: