head to head · open source
Uptime Kuma vs kmon
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. kmon has 2,946 stars, 93 forks, 23 open issues and last shipped 2 days ago. Uptime Kuma leads on adoption by 3,006% (91,498 vs 2,946 stars). Uptime Kuma is written in JavaScript under MIT; kmon is written in Rust under GPL-3.0. Uptime Kuma has attracted 9% as many forks as stars, kmon 3%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (monitoring), so they are genuine substitutes rather than adjacent tools.
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 | kmon | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 2.9K |
| License | MIT | GPL-3.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 8.4K | ⑂ 93 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick kmon if
- You want the kmon feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Rust
- You evaluated both and kmon 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 kmon
kmon is a Linux kernel manager and activity monitor written in Rust that gives system administrators and developers a terminal user interface for inspecting kernel information and managing loadable kernel modules.
More in Infrastructure & Operations
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Frequently asked questions
Is Uptime Kuma or kmon more popular?
Uptime Kuma has 91,498 GitHub stars and kmon has 2,946. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and kmon free?
Both are open source. Uptime Kuma is licensed under MIT and kmon under GPL-3.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and kmon?
Uptime Kuma is written in JavaScript and kmon in Rust. 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 kmon?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose kmon if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.