Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
ExternalCronJobs - You can now manage your cron jobs using this application
UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring
Cronit App - Schedule and run cron jobs online from your browser, for free, with our online cronjobs service.
Cronly - Keep track of your cron jobs and SSL certificates. Don't let them fail unnoticed.