Infrastructure & ops · Updated October 2026
UptimeRobot is a hosted service that checks whether your sites are up and alerts you when they go down. If you would rather own your tools, here are 5 open source alternatives to UptimeRobot, ranked by GitHub stars. Each one is free to use under its license, and you can read, change, and often self-host the code.
The most popular is Uptime Kuma with 92.7k stars, and the most recently updated is OpenStatus, with a commit on Oct 21, 2026.
| Project | Stars | License | Language | Last commit |
|---|---|---|---|---|
 Uptime Kuma | 92.7k | MIT | JavaScript | Oct 21, 2026 |
 Gatus | 12.4k | Apache-2.0 | Go | Oct 17, 2026 |
 Checkmate | 11k | AGPL-3.0 | TypeScript | Oct 20, 2026 |
 OpenStatus | 9.2k | AGPL-3.0 | TypeScript | Oct 21, 2026 |
 Kener | 5.2k | MIT | TypeScript | Oct 21, 2026 |
by louislam
A fancy self-hosted monitoring tool
by TwiN
Automated developer-oriented status page with alerting and incident support
by bluewave-labs
Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. Don't be shy, join her…
by openstatusHQ
Open-source status page, incident response and uptime monitoring
by rajnandan1
Stunning status pages, batteries included!
By GitHub stars, Uptime Kuma is the most popular open source alternative to UptimeRobot right now, with 92.7k stars, followed by Gatus and Checkmate. The best fit depends on your setup, so compare their licenses, languages, and recent activity in the table above.
Yes. All 5 projects on this page are open source, so the software itself is free to use, study, and change. Some of them also sell a hosted version or paid support.
OpenStatus (last commit Oct 21, 2026), Kener (last commit Oct 21, 2026), and Uptime Kuma (last commit Oct 21, 2026) have the most recent commits. Licenses on this list include MIT, Apache-2.0, and AGPL-3.0.
