Use the SecSign ID two-factor authentication on your WordPress site to enable easy and secure login using your iPhone or Android phone.
Plugin to integrate Google's products in WordPress as Google+, Calendar, Drive, Hangouts, Maps, Panoramio, Youtube & more.
WordPress Auth using Google Authenticator is a simple plugin which allows authorization with Google Authenticator tokens.
Adds an extra layer of security to your WordPress Account. Same as Google 2-step verification.
Easily add Duo Security two-factor authentication to your WordPress website. Enable two-factor authentication for your admins and/or users.
Add TOZNY as an authentication option to your WordPress.
OpenOTP plugin Enable two-factor authentication for your admins and/or users
Adds 2-factor authentication to your site. Use Google Authenticator or Authy enforced security.
Adds a field for accepting a Google Authenticator token to WooCommerce's login form.
Easy secure login, use password or OTP as you need. Works with Smart Crib dongles and free apps: Google Authenticator, Pledge, DS3 OATH, AuthWay Token