openstatus
88 · HealthyStatus pages and uptime monitoring from several regions, with incident updates and alerting.
Open source alternatives to Instatus
4 open source projects replace Instatus, ranked by how safe each is to depend on.
Gatus
87 · HealthyHealth checks for HTTP, TCP, DNS and more, configured in YAML, with alerts and a status page.
Uptime Kuma
83 · HealthyUptime monitor for HTTP, TCP, DNS and more, with status pages and many notification channels.
Kener
69 · StableStatus page with built-in monitors, incident history and a polished public page.
Source-available and unverified licenses
The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.
Cachet
60 · StableStatus page system for publishing component status, incidents and scheduled maintenance.
At a glance
Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| openstatus | 88 · Healthy | Free, share hosted changesAGPL-3.0 | 9.2k |
| Gatus | 87 · Healthy | Free to useApache-2.0 | 12k |
| Uptime Kuma | 83 · Healthy | Free to useMIT | 92k |
| Kener | 69 · Stable | Free to useMIT | 5.2k |
| Cachet | 60 · Stable | Free with conditionsCachet License | 15k |
More in Monitoring & error tracking
Instatus is a paid monitoring & error tracking product. See all open source monitoring & error tracking tools, ranked the same way.
Scores last refreshed from GitHub on 9 October 2026. How we score.