head to head · open source
Uptime Kuma vs Checkmate
Uptime Kuma has 91,578 GitHub stars, 8,441 forks, 805 open issues and last shipped today. Checkmate has 10,857 stars, 1,206 forks, 114 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 743% (91,578 vs 10,857 stars). Uptime Kuma is written in JavaScript under MIT; Checkmate is written in TypeScript under AGPL-3.0. Uptime Kuma has attracted 9% as many forks as stars, Checkmate 11%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Uptime Kuma | Checkmate | |
|---|---|---|
| GitHub stars | ★ 92K | ★ 11K |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 8.4K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 92K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Checkmate if
- You want the Checkmate feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and Checkmate fits your workflow better
About Uptime Kuma
Uptime Kuma is a free, MIT licensed, self hosted monitoring tool with a reactive web dashboard, built for operators and teams that want to watch their own HTTP, TCP, and DNS endpoints and keep the resulting data on their own infrastructure.
read the full Uptime Kuma overview →
About Checkmate
Checkmate is an open source, self hosted monitoring application for infrastructure and observability. It is written in TypeScript and released under the AGPL 3.0 license. The repository contains the frontend and backend, and the project sits in the infrastructure monitoring ecosystem for teams that need to track servers, websites, and hardware status without relying on a hosted only product.
read the full Checkmate overview →
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Frequently asked questions
Is Uptime Kuma or Checkmate more popular?
Uptime Kuma has 91,578 GitHub stars and Checkmate has 10,857. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and Checkmate free?
Both are open source. Uptime Kuma is licensed under MIT and Checkmate under AGPL-3.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and Checkmate?
Uptime Kuma is written in JavaScript and Checkmate in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Uptime Kuma or Checkmate?
Choose Uptime Kuma if you want the larger community (91,578 stars) or its MIT licence terms. Choose Checkmate if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.