Beherit

<p>Sends an simply email notification to the comment author, when someone replies to his comment. No configuration, support WordPress translation process.</p>


Simple Comment Notification

Sends an simply email notification to the comment author, when someone replies to his comment.

Sparanoid

<p>Displays a user badge next to the comment author name based on author’s role.</p>
<ul>
<li>No database writes, no configurations, install, activate and go.</li>
<li>Easy styles customization via Jetpack Custom CSS or built-in Custom CSS (WordPress version 4.7 or higher required).</li>
<li>Works with <a href="https://wordpress.org/plugins/current-theme-body-class/" rel="ugc">Current Theme Body Class</a> plugin.</li>
</ul>


Comment Author Role Badge

Displays a user badge next to the comment author name based on author's role.

Simple Comment Notification vs Comment Author Role Badge