WP Crontrol
WP Crontrol enables you to take control of the cron events on your WordPress website.
This plugin allows you to take control over the execution of cron jobs.
Debug Bar Cron adds a new panel to Debug Bar that displays information about WP scheduled events.
Keep WP-Cron running every minute for scheduled tasks without actually using Cron.
Uses separate recurring cron task to check for missed schedules.
Prevent cron from running every time a page is viewed. Good for high traffic sites.
Cron Manager displays and manages any kind WordPress registered cron job.