Juanjo Rubio

This plugin lets you manage and change the frequency of WP-Cron events via the Tools section in your dashboard. No coding needed. Translatable and lightweight.
<h3>License</h3>
This plugin is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License version 2 or later.

Cron Scheduler

A WordPress plugin to easily adjust the frequency of cron jobs with a user-friendly interface.

Telmo Teixeira

WpRightOnTime is a webcron service dedicated to WordPress powered sites.
It enables its users to control all scheduled events, by overriding the visitor-activated cron system, with a user defined call to wp-cron.php.
WpRightOnTime is a webservice, you can start with a free account.
To use this service you will need a valid API key from <a href="https://www.wprightontime.com" rel="nofollow ugc">wprightontime.com</a>.
This plugin is the interface for connecting with the service API.

WpRightOnTime

Every WordPress schedule right on time!
Make sure your scheduled events happen exactly when you want. 
Use it to automate your backups, newsletters, s …

Cron Scheduler vs WpRightOnTime