LastPass is clearly the juggernaut here, and for good reason. The service was one of the first well-rounded password managers available, and one of the first that really made it easy to store all of your passwords either online and synced with other computers and devices, or locally on one device. In short, LastPass remembers your passwords so you dont have to, and makes it easy to audit your passwords, use stronger passwords in general, and even automatically change a password for you if a service has been hacked or compromised. LastPass supports two-factor authentication for your password vault using Google Authenticator, USB devices (using a method weve outlined before), or a YubiKey. The service recently received a visual refresh to streamline the UI and make it easier to use, and sports a number of additional features like credit monitoring, secure password and document storage (and sharing), notifications when a site you have an account with has been hacked, tools to autofill forms and streamline online shopping, and more. LastPass supports Windows, macOS, Linux, Android, iOS, and Windows Phone, and has plugins for Chrome, Firefox, Safari, Opera, and Microsoft Edge.