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Dead Man's Snitch
Cron + scheduled job monitoring — focused only on what didn't happen, not what did.
What it does well
- Extremely focused on a single task: monitoring scheduled jobs via heartbeat signals.
- Simple setup requires only adding an HTTP request to an existing script.
- Integrates with common alerting tools like Slack, PagerDuty, and email.
Where it falls short
- Does not offer a free tier for small projects or hobbyists.
- Exclusively a cloud-based service with no self-hosted deployment option available.
- Not a general uptime monitor; it cannot check public-facing website availability.
Alternatives to Dead Man's Snitch
Cronitor
freemiumSpecialized in monitoring cron jobs and background workers — sends alert when heartbeat misses.
Healthchecks.io
freemiumCron-job heartbeat monitoring — open-source with hosted free tier and self-host option.