Marion Dorsett

The WordPress Database Table Optimizer plugin will automatically make sure that your WordPress MySQL database tables are always optimized.
I’ve also included an admin page located at Manage > Optimize Database. This page will allow you to confirm your WordPress MySQL database tables are optimized, show you the number of rows per table, and the size of the table.
<h3>Arbitrary section</h3>
This plugin uses Aidan Lister size_readable PHP function to show the file sizes of the MySQL tables. I’ve changed the name of the function to avoid naming conflicts with other plugins that may be using this function as well.
http://aidanlister.com/repos/v/function.size_readable.php
Special thanks to David Potter (http://dpotter.net/Technical/) for catching my oversight.
http://www.figmentthinking.com/wordpress-database-table-optimizer/#comment-74

Figment Thinking WordPress Database Table Optimizer

The WordPress Database Table Optimizer plugin will automatically make sure that your WordPress MySQL database…

SpectrOMTech

Dave Jesch

The SpectrOM DB Cleanup tool will remove selected old and unused data in your database tables and then rebuild the MySQL indexes for all of your tables. This helps to ensure that your index files do not get corrupted and that your data can be accessed efficiently.
<blockquote>
Support Details: We are happy to provide support and help troubleshoot issues. Users should know however, that we check the WordPress.org support forums once a week on Fridays from 10am to 12pm PST (UTC -8). Daily support and issue reports are handled via our GitHub repository here: <a href="https://github.com/spectrom/spectrom-db-cleanup/issues" rel="nofollow ugc">https://github.com/spectrom/spectrom-db-cleanup/issues</a>. Please read our support notes here before creating new issues.
</blockquote>
The SpectrOM DB Cleanup tool was specifically designed for data-driven sites such as eCommerce, Learning Management Systems and BuddyPress.
The SpectrOM DB Cleanup Features:
<ul>
<li>Removal of selected old and unused data in your database tables</li>
<li>Rebuilds the MySQL indexes for all of your tables</li>
<li>Configurable so you can indicate what sections to Cleanup</li>
<li>eMail a report to indicated recipients</li>
<li>Automation at specified day and time</li>
</ul>
This DB Cleanup helps to ensure that your database index files do not get corrupted and that your data can be accessed efficiently.
Want to help make this tool even better? Participate in GitHub at <a href="https://github.com/spectrom/spectrom-db-cleanup" rel="nofollow ugc">https://github.com/spectrom/spectrom-db-cleanup</a>. Or <a href="http://spectromtech.com/products/spectrom-db-cleanup/" rel="nofollow ugc">Contact SpectrOM</a> for more information on how you can participate.

SpectrOM DB Cleanup

Removes unnecessary data with Reporting features. Reduces Site Crash and Downtime.

Figment Thinking WordPress Database Table Optimizer vs SpectrOM DB Cleanup