head to head · open source
Uptime Kuma vs kuvasz
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. kuvasz has 631 stars, 37 forks, 5 open issues and last shipped 2 days ago. Uptime Kuma leads on adoption by 14,397% (91,477 vs 631 stars). Uptime Kuma is written in JavaScript under MIT; kuvasz is written in Kotlin under AGPL-3.0. Uptime Kuma has attracted 9% as many forks as stars, kuvasz 6%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (monitoring, self-hosted), 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 | kuvasz | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 631 |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | Kotlin |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 8.4K | ⑂ 37 |
| 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 kuvasz if
- You want the kuvasz feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Kotlin
- You evaluated both and kuvasz 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 kuvasz
Kuvasz is an open source, self hosted uptime and SSL monitoring service written in Kotlin, built for teams, homelab operators and infrastructure engineers who want to watch their websites, services and TLS certificates on infrastructure they control rather than on a vendor's platform.
read the full kuvasz overview →
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Frequently asked questions
Is Uptime Kuma or kuvasz more popular?
Uptime Kuma has 91,477 GitHub stars and kuvasz has 631. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and kuvasz free?
Both are open source. Uptime Kuma is licensed under MIT and kuvasz under AGPL-3.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and kuvasz?
Uptime Kuma is written in JavaScript and kuvasz in Kotlin. 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 kuvasz?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose kuvasz if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.