CronSignal
Cron job monitoring with no per-monitor fees. $5/month.
CronSignal launched on December 29, 2025 with 6 votes, #1,714 of 11,628 launches that month.
What it does
CronSignal alerts you when your cron jobs fail or don't run. Add one curl command to your crontab, get email or Slack alerts when something breaks. Flat $5/month for unlimited monitors. No per-job pricing, no complexity. Just dead-simple heartbeat monitoring.
Heartbeat monitoring for cron jobs. Get alerted the moment a scheduled task doesn
CronSignal monitors your cron jobs and alerts you the moment they fail. One curl command. Email, Slack, Discord & more. # Backup database every night at 2am 0 2 * * * /usr/local/bin/backup.sh && \ curl -fsS cronsignal.io/ping/abc123 One line. If your job runs, we know. If it doesn't, you know. Your server's cron daemon doesn't care if your script crashes halfway through. It doesn't care if the disk filled up, or the API timed out, or someone commented out the wrong line. It just... doesn't run the job. And doesn't tell anyone. You find out when a customer asks why their report is missing. Or when you reach for a backup that doesn't exist. Or when the database you thought was being cleaned…from cronsignal.io
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