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.

Roy Orbitson

drmaxim

This plugin adds an informational page to the Tools menu, which displays all tasks scheduled to run by WP-Cron process.
This is an updated and improved version of the (seemingly abandoned) plugin <a href="https://wordpress.org/plugins/cron-tasks-viewer/" rel="ugc">Cron Tasks Viewer</a> by <a href="http://www.maxvim.com/" rel="nofollow ugc">Dr. Max V.</a>

Cron Tasks Viewer


Helped me quickly confirm that my custom plugin code was registering correctly.


Cron View vs Cron Tasks Viewer