head to head · open source
Uptime Kuma vs Prometheus
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. Prometheus has 66,906 stars, 10,969 forks, 890 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 39% (93,190 vs 66,906 stars). Uptime Kuma is written in JavaScript under MIT; Prometheus is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, Prometheus 16%. Prometheus 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 | Prometheus | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 67K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 11K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 93K 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 if
- You want the Prometheus 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 fits your workflow better
About Uptime Kuma
Uptime Kuma Uptime Kuma is an easy to use self hosted monitoring tool. 🥔 Live Demo Try it! Demo Server (Location: Frankfurt Germany): It is a temporary live demo, all data will be deleted after 10 minutes. Sponsored by Uptime Kuma Sponsors. ⭐ Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Websocket / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20 second intervals Multi Languages Multiple…
read the full Uptime Kuma overview →
About Prometheus
Prometheus Visit prometheus.io for the full documentation, examples and guides. [ ][quay] [ ][hub] Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed. The features that distinguish Prometheus from other metrics and monitoring systems are: A multi dimensional data model (time series defined by metric name and set of key/value dimensions) PromQL, a powerful and flexible query language to…
read the full Prometheus overview →
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Frequently asked questions
Is Uptime Kuma or Prometheus more popular?
Uptime Kuma has 93,190 GitHub stars and Prometheus has 66,906. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and Prometheus free?
Both are open source. Uptime Kuma is licensed under MIT and Prometheus under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and Prometheus?
Uptime Kuma is written in JavaScript and Prometheus 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?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose Prometheus if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.