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…

neoslab

Database Toolset can help you to keep your database clean and optimized by deleting all orphaned or unneeded entries such as “transient”, “revision”, “auto draft”, “orphan postmeta” and much more.
Furthermore Database Toolset can be used to optimize your database using the native SQL function in order to increase your website performance and can also be used to organize scheduled database backup which will be saved on your website root.
Major features in Database Toolset include:
<ul>
<li>Remove “revision”, “draft”, “auto draft” from your database.</li>
<li>Remove “moderated comments”, “spam comments”, “trash comments” from your database.</li>
<li>Remove “orphan postmeta”, “orphan commentmeta”, “orphan relationships” and “dashboard transient feed” from your database.</li>
<li>Allow user to perform an “Optimization Process” of his database using native SQL function.</li>
<li>Allow user to configure an automatic backup of the database which will be save in the website root.</li>
</ul>
<h3>License</h3>
Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial site.

Database Toolset

This extension is really very simple configuration

Great and simple

Database Toolset can help you to keep your database clean by deleting all unneeded entries such as "transient", "revision", "auto draft" and more.

Simplify Admin Panel vs Database Toolset