CodeCave

CodeCave Admin Security Auditor is a lightweight plugin that helps you monitor user activity by tracking and displaying the last login time for each user in your WordPress site.
Features:
<ul>
<li>Automatically tracks the last login time for all users</li>
<li>Displays last login information in the WordPress admin users table</li>
<li>Sortable last login column for easy user management</li>
<li>Shows “Never” for users who haven’t logged in since plugin installation</li>
<li>Timezone-aware display (uses your WordPress timezone settings)</li>
<li>Clean uninstall – removes all data when plugin is deleted</li>
<li>Translation ready</li>
<li>No configuration needed – works out of the box</li>
</ul>
Use Cases:
<ul>
<li>Monitor user engagement and activity</li>
<li>Identify inactive user accounts</li>
<li>Security auditing and compliance</li>
<li>User account cleanup and maintenance</li>
<li>Track user adoption of your WordPress site</li>
</ul>
Privacy and Data:
This plugin stores the last login timestamp as user metadata in your WordPress database. No data is sent to external servers. When you uninstall the plugin, all stored data is automatically removed.
<h3>Developer Notes</h3>
Accessing Last Login Data Programmatically:
You can retrieve the last login timestamp for a user:
<pre><code>$auditor = CodeCave_Admin_Security_Auditor::get_instance();
$last_login = $auditor->get_last_login( $user_id );

if ( $last_login ) {
 echo 'Last login: ' . date( 'Y-m-d H:i:s', $last_login );
} else {
 echo 'Never logged in';
}
</code></pre>
Hooks and Filters:
The plugin uses standard WordPress hooks and does not currently provide custom hooks. This may be added in future versions based on user feedback.

CodeCave Admin Security Auditor

Track and display the last login time for each user in the WordPress admin users table.

Marcel Pol

Dashboard widget that shows admin users and when they were last logged in.
<h4>Compatibility</h4>
This plugin is compatible with <a href="https://www.classicpress.net" rel="nofollow ugc">ClassicPress</a>.
<h4>Contributions</h4>
This plugin is also available in 
<a href="https://codeberg.org/cyclotouriste/admin-users-logged-in" rel="nofollow ugc">Codeberg</a>.

Admin Users Logged In

Thanks to the easily editable language file, I was able to translate this plugin to my wishes. :)

Edit: which is now possible! THANKS! 

Perfect

Dashboard widget that shows admin users and when they were last logged in.

CodeCave Admin Security Auditor vs Admin Users Logged In