Radek Mezulanik

You can lock whole website by setting it under maintenance.
Features:
<ul>
<li>
Select roles who applies maintenance mode
</li>
<li>
Set a redirect to login page
</li>
<li>
Edit a maintenance message in wysiwyg editor including media
</li>
</ul>
<h3>Sponsorship</h3>
<a href="https://www.productboard.com" rel="nofollow ugc">Productboard</a>

Zedna Maintenance Mode

Set you website under maintenance to lock content while development.

Alley

Matthew Boynes

This plugin will add a “Roles and Capabilities” panel to Debug Bar that tabulates all the roles and capabilities on the site. This plugin requires the Debug Bar Plugin.

Debug Bar Roles and Capabilities

A simple add-on for Debug Bar that tabulates all roles and capabilities

Zedna Maintenance Mode vs Debug Bar Roles and Capabilities