Compared, row by row.
The same list of things that break, one row per tool, every reading sourced. Enterprise suites stay a category: they cover most rows with collectors, a contract and enterprise pricing.
What breaks, by tool
| Tool | Host down | Cert expires | Domain lapses | Cert swapped | DNS drifts | ISP link drops | Mail undelivered | Job silent | Registrar changes | Vendor incident |
|---|---|---|---|---|---|---|---|---|---|---|
| UptimeRobotHosted | Yes | Yes | Yes | Unknown | Yes | Unknown | No | Yes | Partly | Unknown |
| Better StackHosted | Yes | Yes | Yes | Unknown | Unknown | Unknown | Unknown | Yes | Unknown | Unknown |
| PingdomHosted | Yes | Yes | Unknown | Unknown | Unknown | Unknown | No | Unknown | Unknown | Unknown |
| Uptime KumaSelf-hosted | Yes | Yes | Unknown | Unknown | Yes | Unknown | Unknown | Yes | Unknown | Unknown |
| ChecklyHosted | Yes | Yes | Unknown | Partly | Yes | Unknown | Unknown | Yes | Partly | Unknown |
| CronitorHosted | Yes | Yes | Unknown | Unknown | Unknown | Unknown | Unknown | Yes | Unknown | Unknown |
| GatusSelf-hosted | Yes | Yes | Yes | Unknown | Yes | Unknown | Unknown | Yes | Partly | Unknown |
| Healthchecks.ioHosted | No | No | No | No | No | No | No | Yes | No | No |
| HetrixToolsHosted | Yes | Yes | Yes | Partly | Unknown | Unknown | Partly | Partly | Partly | Unknown |
| HyperpingHosted | Yes | Yes | Unknown | Partly | Unknown | Unknown | Unknown | Yes | Unknown | Unknown |
| Oh DearHosted | Yes | Yes | Yes | Yes | Yes | Unknown | Partly | Yes | Partly | Unknown |
| openstatusHosted | Yes | Unknown | Unknown | Unknown | Yes | Unknown | Unknown | Unknown | Partly | Unknown |
| Site24x7Hosted | Yes | Yes | Yes | Yes | Yes | Unknown | Partly | Yes | Partly | Unknown |
| StatusCakeHosted | Yes | Yes | Yes | Unknown | Yes | Unknown | Partly | Yes | Partly | Unknown |
| Updown.ioHosted | Yes | Yes | Yes | Partly | Unknown | Unknown | Unknown | Yes | Unknown | Unknown |
| Uptime.comHosted | Yes | Yes | Yes | Unknown | Yes | Unknown | Partly | Yes | Partly | Yes |
| hostnagHosted | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Read from each vendor's public documentation on 2026-09-15, 2026-09-17. Tell us if it changed. UNKNOWN means their documentation did not say either way on the day we read it. PARTLY is covered with a limit; each tool's page carries the reading behind every lamp.
Read the full comparison
UptimeRobotHosted · vs hostnagBetter StackHosted · vs hostnagPingdomHosted · vs hostnagUptime KumaSelf-hosted · vs hostnagChecklyHosted · vs hostnagCronitorHosted · vs hostnagGatusSelf-hosted · vs hostnagHealthchecks.ioHosted · vs hostnagHetrixToolsHosted · vs hostnagHyperpingHosted · vs hostnagOh DearHosted · vs hostnagopenstatusHosted · vs hostnagSite24x7Hosted · vs hostnagStatusCakeHosted · vs hostnagUpdown.ioHosted · vs hostnagUptime.comHosted · vs hostnag
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