What are some alternatives?
When comparing Cronly and Cronitor, you can also consider the following products
Healthchecks.io - Monitor your cron jobs and scheduled tasks, get notified when they fail.
Cronhub - Cronhub helps you to easily monitor all your cron jobs in a beautiful dashboard. It alerts you when your cron job doesn't run on time or it fails.
crontab guru - The quick and simple editor for cron schedule expressions by Cronitor
PushMon - PushMon is a new kind of cloud-based monitoring system.
PagerDuty - Cloud based monitoring service
Posthook - Simple, Robust Job Scheduling For Your Application