Healthchecks.io
Monitors the jobs that fail silently — the cron nobody noticed stopped.
Healthchecks solves the opposite problem from the rest of this page. Instead of pinging your site, it waits for your scheduled jobs to ping it, and alerts you when one does not — the nightly backup that quietly stopped running three weeks ago, the certificate renewal that failed, the data export nobody checked. That class of failure is invisible to every uptime monitor here, and it is usually the more expensive one. BSD-3-Clause, around 10.2k stars, self-hostable in Python with a hosted tier that has a free plan. It complements an uptime monitor rather than replacing one.
What it does well
- +Catches silent cron and backup failures nothing else on this page sees
- +Dead simple integration — one curl at the end of your job
- +BSD-3-Clause, self-hostable, with an honest hosted free tier
- +Notifications to email, Slack, PagerDuty, webhooks and more
Where it falls short
- −Not an uptime monitor — it does not check whether your site responds
- −Only sees jobs you have instrumented to report in
- −Self-hosting means running a Django application and a database
- −Complements rather than replaces the rest of this comparison
Healthchecks.io as an alternative to
Where Healthchecks.io shows up in our comparisons, and how it ranked.
Healthchecks.io head-to-head
Straight comparisons against the tools people weigh it against.