Front Desk allows a site to provide login, registration, password recovery and reset, and profile editing functionality through the front-end.

For GEORGIAN users. Secure login page with one-time SMS-CODE [ Georgian SMS two-step authentification, login]

Minimal plugin that allows WordPress users to log in using Google.

Sovay secures your identity and your WordPress site logins. Authenticate once and securely access all your sites — without password hassles.