Christian Jongeneel

The Theme and Plugin Profiler uses a little known PHP feature known as ticks. Basically, this is an internal event that occurs every time a code block is executed, marked (roughly) by a function call or curly {} brackets.
The plugin uses ticks to collect a list of the functions that were executed, how often they were called and how much time they took in total. The plugin’s option page gives some filters to select and sort the results. This will give developers clues which parts of their code demand scrutiny.

Theme and Plugin (T&P) Profiler

Make your theme or plugin faster, greener and smarter with this plugin, that will tell you which of your functions is eating up most server time.

Michal Slepko

<a href="https://github.com/rootscopeltd/wc-error-logs-emailer" rel="nofollow ugc">Error Logs Emailer for WooCommerce</a> is a free plugin to send fatal error logged by WooCommerce
<ul>
<li>Know what errors are happening on your site without constantly checking the logs</li>
<li>Set the email where error logs should be sent if it’s not a site admin</li>
<li>Add multiple email addresses</li>
<li>Emails are sent at 5AM</li>
</ul>

Error Logs Emailer for WooCommerce

Sends the previous day's WooCommerce fatal error log to specified email(s) using Action Scheduler.

Theme and Plugin (T&P) Profiler vs Error Logs Emailer for WooCommerce