John Ellmore

This plugin allows the website administrator to remove the following from the WordPress Administration Panel:
<ul>
<li>menu links (like “Tools”, “Appearance”, or annoying menus from third-party plugin)</li>
<li>submenu links (like “Users > Your Profile”, “Tools > Available Tools”, or annoying menus from third-party plugins)</li>
<li>and dashboard meta boxes (like “QuickPress”, “Other WordPress News”, or annoying meta boxes from third-party plugins)</li>
</ul>
It relies on hardcoded settings in wp-config.php (instead of having yet another admin settings page to deal with). Since the settings are all hardcoded, it can be easily set up by a website administrator and left in place without any users messing with it. It works on both single and multisite installations.

Simplify Admin Panel

Allows easy removal of menu links, submenu links, and dashboard widgets from the WordPress Admin…

scribu

Ron Rennick

Curtiss Grymala

This plugin adds 2 privacy options in a single install and 3 in a network install. In a network install the network administrators (Super admins) have the option to set the privacy setting for the entire network. When the privacy is set for the entire network, the extra privacy options are not shown on individual site’s Settings -> Privacy.
Features
In a single site WordPress install adds the following privacy options:
<ul>
<li>I would like my site to be visible only to Site subscribers.</li>
<li>I would like my site to be visible only to Site administrators. </li>
</ul>
In a WordPress network activated on an individual site adds the following privacy options:
<ul>
<li>I would like my site to be visible only to Registered network users.</li>
<li>I would like my site to be visible only to Site subscribers.</li>
<li>I would like my site to be visible only to Site administrators. </li>
<li>I would like my site to be visible only to Site contributors (and above)</li>
</ul>
When Network Activated or in the mu-plugins folder in a WordPress network adds the following:
<ul>
<li>A privacy selector in the Network Admin -> Settings page to allow individual site privacy or the 3 above across to network.</li>
</ul>
Support can be obtained through:
<a href="https://wordpress.org/support/plugin/network-privacy" rel="ugc">Try the WordPress Forums first</a>
<a href="http://twitter.com/wpmuguru" rel="nofollow ugc">Twitter</a>
<a href="http://ronandandrea.com/contact/" rel="nofollow ugc">Ron & Andrea</a>
<h3>To Do</h3>
<ul>
<li>Update the robots.txt process to use the constants/functions for wp-content, wp-includes and wp-admin directories (in case those items are in a non-standard location, or the install is in a subdirectory)</li>
</ul>

Network Privacy

Golden oldie that I use on all my staging sites. Although originally developed for Multisite, it works brilliant on standalone sites too, for which I mostly use the plugin.



Every staging site should have this

Adds more privacy options to both single Wordpress sites and WordPress networks.

Simplify Admin Panel vs Network Privacy