head to head · open source
Uptime Kuma vs nginx-lua-prometheus
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. nginx-lua-prometheus has 1,566 stars, 238 forks, 5 open issues and last shipped 8 days ago. Uptime Kuma leads on adoption by 5,743% (91,498 vs 1,566 stars). Uptime Kuma is written in JavaScript under MIT; nginx-lua-prometheus is written in Lua under MIT. Uptime Kuma has attracted 9% as many forks as stars, nginx-lua-prometheus 15%. 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 | nginx-lua-prometheus | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 1.6K |
| License | MIT | MIT |
| Written in | JavaScript | Lua |
| Last push | 2026-09-18 | 2026-09-11 |
| Forks | ⑂ 8.4K | ⑂ 238 |
| 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 nginx-lua-prometheus if
- You want the nginx-lua-prometheus feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Lua
- You evaluated both and nginx-lua-prometheus 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 nginx-lua-prometheus
nginx lua prometheus is an MIT licensed Lua library that lets Nginx record counters, gauges, and histograms inside a shared dictionary and expose them on a dedicated HTTP endpoint for Prometheus to scrape, and it is aimed at operators running OpenResty or a Lua enabled Nginx who want to instrument the request path directly rather than through a sidecar.
read the full nginx-lua-prometheus overview →
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Frequently asked questions
Is Uptime Kuma or nginx-lua-prometheus more popular?
Uptime Kuma has 91,498 GitHub stars and nginx-lua-prometheus has 1,566. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and nginx-lua-prometheus free?
Both are open source. Uptime Kuma is licensed under MIT and nginx-lua-prometheus under MIT. Neither carries a licence fee.
What is the difference between Uptime Kuma and nginx-lua-prometheus?
Uptime Kuma is written in JavaScript and nginx-lua-prometheus in Lua. 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 nginx-lua-prometheus?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose nginx-lua-prometheus if its feature set, stack or MIT licence fits better. Both are self-hostable.