Nomad Programmer

<p>It will help you to make only one logged in at a time on WordPress sites. if user wants to log in two or other places than it will destroy all other sessions.</p>
<p>This Plugin uses function like WordPress 4.1, that have a button on the user profile screen which clears all other sessions, and on the user editing screen which clears all sessions. This plug-in can limit simultaneous login. This plugin use for every user automatically.</p>
<h3>Licence</h3>
<p><a href="https://wordpress.org/about/gpl/" rel="ugc">GNU General Public License</a></p>


One Active session

Working till now

This plugin clears all other logged in sessions and allow only one login by one user

brechtryckaert

<p>Limiting the cookie expire time of password protected posts. By default the cookie set when entering a password to access a password-protected post will be active for 10 days. This plugin turns this cookie into a session-based cookie. This means your visitor will need to re-enter the password if the browser was closed prior to revisiting the post.</p>


Instant Cookie Expire

This plugin turns the cookie for a password-protected post into a session-based cookie.

One Active session vs Instant Cookie Expire