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…

boliquan

WP Clean Up can help us to clean up the wordpress database by removing “revision” “draft” “auto draft” “moderated comments” “spam comments” “trash comments” “orphan postmeta” “orphan commentmeta” “orphan relationships” “dashboard transient feed”. 
It allows you to optimize your WordPress database without phpMyAdmin. 
It adds a settings page to “Dashboard”->”Settings”->”WP Clean Up” where you can clean up the wordpress database. 
It allows you to remove the redundant data within few clicks. 
It is a effective tool to keep your database clean and surely save a lot of space of your MySQL Database.
<h4>Usage</h4>
<ol>
<li>Download and extract <code>wp-clean-up.zip</code> to <code>wp-content/plugins/</code></li>
<li>Activate the plugin through the ‘Plugins’ menu in WordPress.</li>
<li>“Dashboard”->”Settings”->”WP Clean Up”</li>
<li>For more information of this plugin, please visit: <a href="http://boliquan.com/wp-clean-up/" title="WP Clean Up" rel="nofollow ugc">Plugin Homepage</a>.</li>
</ol>
Related Links:
<ul>
<li><a href="http://boliquan.com/wp-clean-up/" rel="nofollow ugc">WP Clean Up (FAQ)</a> | <a href="https://wordpress.org/plugins/wp-clean-up/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/wp-smtp/" rel="nofollow ugc">WP SMTP</a> | <a href="https://wordpress.org/plugins/wp-smtp/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/wp-anti-spam/" rel="nofollow ugc">WP Anti Spam</a> | <a href="https://wordpress.org/plugins/wp-anti-spam/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/wp-code-highlight/" rel="nofollow ugc">WP Code Highlight</a> | <a href="https://wordpress.org/plugins/wp-code-highlight/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/wp-slug-translate/" rel="nofollow ugc">WP Slug Translate</a> | <a href="https://wordpress.org/plugins/wp-slug-translate/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/yg-share/" rel="nofollow ugc">YG Share</a> | <a href="https://wordpress.org/plugins/yg-share/" rel="ugc">Download</a></li>
<li><a href="http://boliquan.com/" rel="nofollow ugc">BoLiQuan</a></li>
<li><a href="http://boliquan.com/" rel="nofollow ugc">玻璃泉</a></li>
<li><a href="http://boliquan.com/" rel="nofollow ugc">夜光</a></li>
<li><a href="http://boliquan.com/ylife/" rel="nofollow ugc">YLife</a> | <a href="http://code.google.com/p/ylife/downloads/list" rel="nofollow ugc">Download</a></li>
</ul>

WP Clean Up

WP Clean Up can help us to clean up the wordpress database by removing "revision" "draft" "auto draft" and so on.

Simplify Admin Panel vs WP Clean Up