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Monitoring

Free and open-source UptimeRobot alternatives

UptimeRobot (Website and server uptime monitoring with status pages) is a commercial product. These 2 tools do the same job and are free to use or to self-host.
Short answer: the best free alternatives to UptimeRobot are Uptime Kuma and Gatus. Self-hosting is free; you pay only for the server (a small VPS is about $4–6/mo). Licenses and prices checked 2026-10-01.
  1. 1
    Uptime Kuma

    Self-hosted uptime monitoring tool

    Self-hosted uptime monitor with status pages and many alert channels.

    Open source (MIT) ·★ 92k GitHub stars · last commit 2026-10-07 · details

  2. 2
    Gatus

    Developer-oriented health dashboard and status page

    Config-as-code health checks and status page in one binary.

    Open source (Apache-2.0) ·★ 12k GitHub stars · last commit 2026-10-05 · details

Want paid options too? See all UptimeRobot alternatives or the full free alternatives list. Beyond developer tools, OSS Software lists more open-source UptimeRobot alternatives.

FAQ

Is there a free alternative to UptimeRobot?+

Yes. Uptime Kuma and Gatus do the same job for free; Uptime Kuma and Gatus are open source.

What is the best open-source alternative to UptimeRobot?+

Uptime Kuma is the most starred on GitHub (92k stars). Self-hosted uptime monitor with status pages and many alert channels.

Open source: OSI-approved license. Free to self-host: the code is public and free to run yourself, with limits in the license.