head to head · open source
Uptime Kuma vs prometheus-operator
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped today. prometheus-operator has 9,976 stars, 3,878 forks, 296 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 817% (91,498 vs 9,976 stars). Uptime Kuma is written in JavaScript under MIT; prometheus-operator is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, prometheus-operator 39%. 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.
← all 8884 open source comparisons
Side by side
| Uptime Kuma | prometheus-operator | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 10.0K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 8.4K | ⑂ 3.9K |
| 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 prometheus-operator if
- You want the prometheus-operator 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 prometheus-operator 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 prometheus-operator
Prometheus Operator is an Apache 2.0 licensed, Go based controller that provides Kubernetes native deployment and management of Prometheus and its related monitoring components, and it is built for platform and infrastructure engineers who operate a Prometheus monitoring stack on Kubernetes clusters.
read the full prometheus-operator overview →
More in Infrastructure & Operations
Related comparisons
More Monitoring & Observability projects
Compare either of these against the rest of the Monitoring & Observability field.
Frequently asked questions
Is Uptime Kuma or prometheus-operator more popular?
Uptime Kuma has 91,498 GitHub stars and prometheus-operator has 9,976. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and prometheus-operator free?
Both are open source. Uptime Kuma is licensed under MIT and prometheus-operator under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and prometheus-operator?
Uptime Kuma is written in JavaScript and prometheus-operator 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 prometheus-operator?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose prometheus-operator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.