Jan Štětina

Instead of a shortcode <code>[closed-blog-helper]</code> shows a (customizable) message for the visitor according to their access rights to the blog.
Intended for use on multisite, but should work on single blogs too.
It recognizes five different situations:
<ul>
<li>Superadmin</li>
<li>Admin</li>
<li>Logged in but not registered on the blog (cannot <code>read</code>)</li>
<li>Logged in and can <code>read</code></li>
<li>Visitor</li>
</ul>
Message texts can be customized using few predefined keywords.
Developed for private use, but has perspective for more extensive usage. I can’t guarantee any support in the future nor further development, but it is to be expected. Kindly inform me about bugs, if you find any, or propose new features: zaantar@zaantar.eu.

Closed Blog Helper

Instead of a shortcode shows a (customizable) message for the visitor according to their access rights to the blog.

This plugin allows you to easily open and close your website and display a custom message or HTML page when closed.
<ul>
<li>Simple yes/no toggle to open/close your website.</li>
<li>Display your own closed.php within your theme.</li>
<li>Display your own custom HTML markup, pasted directly into the plugin settings.</li>
<li>Display a basic message informing your visitors that your website is closed.</li>
<li>Set paths which bypass the closed page entirely.</li>
<li>Set a bypass GET parameter which will allow anyone you give the URL to to browse the website as normal while the site is closed.</li>
<li>Automatically clears any caches for W3 Total Cache and WP Super Cache.</li>
</ul>

Website Open/Closed Toggle

This plugin allows you to easily open and close your website and display a custom message or HTML page when closed.

Closed Blog Helper vs Website Open/Closed Toggle