Joshua Fredrickson

Use this plugin to automatically run the OPTIMIZE command on your WordPress database every day. There are no settings to configure. Simply activate the plugin and you’re set!
This plugin hooks into the existing WordPress cron system.

Optimize Database

Automatically optimize your database daily.

Simon Wheatley

This plugin adds a page in the admin area where you can see all the queued Cron events, when they are due, which schedule they are on (or if they are one off) and which hook they will call. Future development might include:
<ul>
<li>Removing Cron events</li>
<li>Seeing which functions/methods are currently called by which hooks</li>
<li>Manually adding Cron events</li>
<li>Editing Cron events</li>
</ul>
However, do not hold your breath! Development for this plugin will be as and when I need it, or when someone submits a handy patch. I’m definitely open to co-development on this one, so if you want to join in then <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a>.
Any issues: <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a>.

Cron View

Allows you to view all WP Cron events. Handy for development.

Optimize Database vs Cron View