PeoplePress

It is currently in early stage of development and provides very basic functionality. 
We are looking forward to add more functionality with our upcoming releases.
Currently it offers login, password reset and a basic user profile with default fields.

It is lightweight user profile and account management plugin.

Duck Dev

Joel James

Loggedin is a lightweight WordPress plugin that lets you easily limit the number of simultaneous active sessions a user can have. This is a crucial feature for membership sites, online courses, and other platforms where you need to prevent users from sharing their accounts.
<h3>🎁 Features</h3>
<ul>
<li>Set Global Limits: Define a maximum number of concurrent logins for all users.</li>
<li>Flexible Login Behavior: Choose to either block new logins when the limit is reached or automatically log out the oldest session to allow a new one.</li>
<li>Prevent Account Sharing: By limiting sessions, you can effectively stop users from sharing their login credentials with others.</li>
<li>Admin Control: Easily force log out a user from the admin dashboard, giving you full control over active sessions.</li>
<li>Developer-Friendly: The plugin is built with a hook-based architecture, making it highly customizable and extensible for developers.</li>
</ul>
<h3>📦 Addons</h3>
Enhance LoggedIn’s functionality with these simple yet powerful <a href="https://duckdev.com/addons/loggedin/" rel="nofollow ugc">add-ons</a>.
<ul>
<li>
<a href="https://duckdev.com/addon/limit-per-user/" rel="nofollow ugc">Limit Per User</a>: For more granular control, the Limit Per User addon allows you to set specific login limits for individual users, overriding the global settings. This is perfect for offering different tiers of access or special privileges.
</li>
<li>
<a href="https://duckdev.com/addon/real-time-logout/" rel="nofollow ugc">Real-time Logout</a>: This add-on ensures a truly seamless experience by checking for logouts in real time. When a user’s session is terminated in the background due to a login limit, the add-on will automatically refresh their page, instantly restricting access.
</li>
</ul>
<h3>🐛 Bug Reports</h3>
Found a bug? We welcome your bug reports! Please report any issues directly on the <a href="https://github.com/Joel-James/loggedin/issues" rel="nofollow ugc">Loggedin GitHub repository</a>.
Please note: GitHub is for bug reports and development-related issues only. For support, please use the WordPress.org support forums.

Loggedin – Limit Concurrent Sessions

Good Plugin

Good

Lightweight plugin that limits an account to a specific number of concurrent logins.

PeoplePress vs Loggedin – Limit Concurrent Sessions