Why Should You Use a Password Manager
Password managers offer greater security and convenience for the use of passwords to access online services. Greater security is achieved principally through the capability of most password manager applications to generate unique, long, complex, easily changed passwords for all online accounts and the secure encrypted storage of those passwords either through a local or cloud-based vault. Greater convenience is provided by the use of a single master password to access the password vault rather than attempting to memorize different passwords for all accounts. Most password manager applications offer additional capabilities that enhance both convenience and security such as storage of credit card and frequent flyer information and autofill functionality.
How to Use a Password Manager
A password manager will store your username and password you use when you first sign in to a website or service. Then the next time you visit that website, it will autofill forms with your stored user login information. For those websites and services that don't handle automatic filling, a password manager lets you copy the password to paste into the password field.
The manager can generate a strong password for you and make sure you aren't reusing across multiple accounts. And if you use more than one device, you want a manager that is available across all your devices and browsers, so you can access your passwords and login information -- including credit-card and shipping information -- from anywhere through the manager app or its browser extension.
Password Manager Options
Here is a list of different options of password managers. All of these options offer free and paid versions.