https://www.techradar.com/news/software/applications/the-best-password-manager-1325845

It's best practice to use a different password for all of your online accounts, but remembering them all can be nearly impossible – particularly if you want to use strong logins that are difficult to crack. However, there is a solution to both of these problems: a secure password manager that will generate strong passwords for you using a combination of letters, numbers and special characters, and store them all in an encrypted vault.

Once you’re logged into the manager, these programs will automatically fill your username and password each time you visit a site that requires them – taking the guessing game out of surfing the internet.