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…

Katherine Semel-Munson

As my WordPress network grew I found it challenging to track which plugins and themes were used on each site, and the only way to check was to visit each dashboard one at a time. What a hassle!
This plugin adds columns to your Network Admin on the Sites, Themes and Plugins pages to show which of your sites have each plugin and theme activated. Now you can easily determine which plugins and themes are used on your network sites and which can be safely removed.

Network Plugin Auditor

This is an indispensable tool for MS admins, since WordPress core doesn't include any tools for seeing which MS plugins are in use or by which sites.



Excellent tool

For multisite/network installations only.  Adds columns to your network admin to show which sites are using each plugin and theme.

Simplify Admin Panel vs Network Plugin Auditor