ActiveAuth

ActiveAuth is a powerful yet easy to use solution which enables two-factor authentication for your wordpress site. 
The plugin can increase your online security and will protect your privacy by adding a second layer of identity verification to prevent access to your site by password hacking. 
The two-step verification (two-factor authentication) sends a second request, after you enter your ID and password on the website to your mobile device. 
Even if you are using are using the strongest password ever, you never can be sure if you are not a subject of password sniffing or hacker attack on the password database. 
By adding the 2nd layer of authentication, you remain secure even in the event your password for the first step is lost or stolen. 
Simple and efficient you can use Mobile Push (over data) SMS, or even a phone call for the 2nd step.

ActiveAuth is a powerful yet easy to use solution which enables two-factor authentication for your wordpress site.

Tushar Sharma

Email OTP Login adds an additional layer of security to your WordPress site by requiring users to verify an OTP sent to their email after entering their username and password. This ensures that only users with access to the registered email can log in.
Features:
<ul>
<li>Email OTP verification during login.</li>
<li>OTP expires in 5 minutes (configurable).</li>
<li>OTP stored securely using WordPress password hashing.</li>
<li>Works with the default WordPress login form.</li>
<li>Uses WordPress built-in <code>wp_mail()</code> function (works with SMTP plugins).</li>
</ul>
This plugin does not modify WordPress core files.
<h3>License</h3>
This plugin is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 or later.
This plugin is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Email OTP Login

Adds OTP (One-Time Password) verification after login for enhanced security in WordPress. OTP is sent to the user's email.

ActiveAuth vs Email OTP Login