head to head · open source
Uptime Kuma vs debug
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. debug has 11,454 stars, 991 forks, 96 open issues and last shipped 6 months ago. Uptime Kuma leads on adoption by 699% (91,477 vs 11,454 stars). Uptime Kuma is written in JavaScript under MIT; debug is written in JavaScript under MIT. Uptime Kuma has attracted 9% as many forks as stars, debug 9%. 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 | debug | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 11K |
| License | MIT | MIT |
| Written in | JavaScript | JavaScript |
| Last push | 2026-09-17 | 2026-04-01 |
| Forks | ⑂ 8.4K | ⑂ 991 |
| 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 debug if
- You want the debug feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and debug 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 debug
debug is a tiny, MIT licensed JavaScript debugging utility modelled after Node.js core's debugging technique, and it is aimed at JavaScript developers and library authors who want to turn debug output on and off by namespace instead of editing or deleting logging statements.
read the full debug overview →
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Frequently asked questions
Is Uptime Kuma or debug more popular?
Uptime Kuma has 91,477 GitHub stars and debug has 11,454. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and debug free?
Both are open source. Uptime Kuma is licensed under MIT and debug under MIT. Neither carries a licence fee.
What is the difference between Uptime Kuma and debug?
Uptime Kuma is written in JavaScript and debug in JavaScript. 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 debug?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose debug if its feature set, stack or MIT licence fits better. Both are self-hostable.