head to head · open source
Uptime Kuma vs nezha
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped today. nezha has 10,317 stars, 1,613 forks, 54 open issues and last shipped 4 days ago. Uptime Kuma leads on adoption by 787% (91,498 vs 10,317 stars). Uptime Kuma is written in JavaScript under MIT; nezha is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, nezha 16%. 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 | nezha | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 10K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-09-18 | 2026-09-14 |
| Forks | ⑂ 8.4K | ⑂ 1.6K |
| 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 nezha if
- You want the nezha feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and nezha 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 nezha
Nezha is a self hosted, lightweight server and website monitoring and O&M tool written in Go, for operators and small teams who want to watch their own machines and sites without sending that data to someone else's dashboard.
read the full nezha overview →
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Frequently asked questions
Is Uptime Kuma or nezha more popular?
Uptime Kuma has 91,498 GitHub stars and nezha has 10,317. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and nezha free?
Both are open source. Uptime Kuma is licensed under MIT and nezha under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and nezha?
Uptime Kuma is written in JavaScript and nezha in Go. 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 nezha?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose nezha if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.