Password Hasher NG от Carsten Nielsen

Password Hasher NG is the convenient and secure way to have different passwords on all sites. Simply remember the masterkey and password hasher will generate a unique password based on your settings without ever storing your passwords.

For more information: https://github.com/phreaknerd/passhash-ng

Includes a standalone html-version based on https://github.com/redcatjs/passhash-ng-html