head to head · open source
Uptime Kuma vs kmon
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. kmon has 2,969 stars, 93 forks, 23 open issues and last shipped 1 months ago. Uptime Kuma leads on adoption by 3,039% (93,190 vs 2,969 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 | ★ 93K | ★ 3.0K |
| License | MIT | GPL-3.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-11-02 | 2026-09-21 |
| Forks | ⑂ 8.7K | ⑂ 93 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 93K 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 Uptime Kuma is an easy to use self hosted monitoring tool. 🥔 Live Demo Try it! Demo Server (Location: Frankfurt Germany): It is a temporary live demo, all data will be deleted after 10 minutes. Sponsored by Uptime Kuma Sponsors. ⭐ Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Websocket / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20 second intervals Multi Languages Multiple…
read the full Uptime Kuma overview →
About kmon
Linux Kernel Manager and Activity Monitor 🐧💻 The kernel is the part of the operating system that facilitates interactions between hardware and software components. On most systems, it is loaded on startup after the bootloader and handles I/O requests as well as peripherals like keyboards, monitors, network adapters, and speakers. Typically, the kernel is responsible for memory management , process management , device management , system calls , and security . Applications use the system call mechanism for requesting a service from the operating system and most of the time, this request is passed to the kernel…
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Frequently asked questions
Is Uptime Kuma or kmon more popular?
Uptime Kuma has 93,190 GitHub stars and kmon has 2,969. 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 (93,190 stars) or its MIT licence terms. Choose kmon if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.