gerrygooner

This WordPress plugin will cleanup your WordPress database, performing the following actions:
<ul>
<li>Remove all post revisions.</li>
<li>Remove all spam comments.</li>
<li>Remove all unapproved comments.</li>
<li>Remove all unused tags.</li>
<li>Remove all unused post meta.</li>
<li>Optimize MySQL tables by removing all unused table space.</li>
</ul>
Based on WP-Cleanup by JortK, this plugin replaces usage of mysql_query() that was deprecated in PHP 5.5 with WP_Query functions .

WP-CleanDB

JortK

This WordPress plugin will cleanup your WordPress database, which means that it will perform the following actions:
*Remove all post revisions
*Remove all spam comments
*Remove all unapproved comments
*Remove all unused tags
*Remove all unused post meta
*Optimize MySQL tables by removing all unused table space

WP-Cleanup

This Wordpress plugin will cleanup your Wordpress database by remove all unused data from your database.

WP-CleanDB vs WP-Cleanup