head to head · open source
Uptime Kuma vs fsmon
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. fsmon has 1,032 stars, 162 forks, 21 open issues and last shipped 7 months ago. Uptime Kuma leads on adoption by 8,930% (93,190 vs 1,032 stars). Uptime Kuma is written in JavaScript under MIT; fsmon is written in C under MIT. Uptime Kuma has attracted 9% as many forks as stars, fsmon 16%. 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 | fsmon | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 1.0K |
| License | MIT | MIT |
| Written in | JavaScript | C |
| Last push | 2026-11-02 | 2026-04-11 |
| Forks | ⑂ 8.7K | ⑂ 162 |
| 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 fsmon if
- You want the fsmon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C
- You evaluated both and fsmon 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 fsmon
fsmon Low level filesystem monitor utility for Linux, Android, iOS and macOS. Author : pancake @ nowsecure License : MIT Designed for System administrators and incident responders Security researchers and forensic analysts Developers debugging I/O heavy applications Reverse engineers interested in observing filesystem access behavior Installation On macOS you can now install it via brew with these commands: Alternatively just run make or pick the builds from the release page. Usage The tool retrieves file system events from a specific directory and shows them in colorful format or in JSON. It is possible to…
read the full fsmon overview →
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Frequently asked questions
Is Uptime Kuma or fsmon more popular?
Uptime Kuma has 93,190 GitHub stars and fsmon has 1,032. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and fsmon free?
Both are open source. Uptime Kuma is licensed under MIT and fsmon under MIT. Neither carries a licence fee.
What is the difference between Uptime Kuma and fsmon?
Uptime Kuma is written in JavaScript and fsmon in C. 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 fsmon?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose fsmon if its feature set, stack or MIT licence fits better. Both are self-hostable.