head to head · open source
Uptime Kuma vs kapacitor
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. kapacitor has 2,378 stars, 475 forks, 834 open issues and last shipped 4 days ago. Uptime Kuma leads on adoption by 3,819% (93,190 vs 2,378 stars). Uptime Kuma is written in JavaScript under MIT; kapacitor is written in Go under MIT. Uptime Kuma has attracted 9% as many forks as stars, kapacitor 20%. 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 | kapacitor | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 2.4K |
| License | MIT | MIT |
| Written in | JavaScript | Go |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 8.7K | ⑂ 475 |
| 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 kapacitor if
- You want the kapacitor feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and kapacitor 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 kapacitor
Kapacitor Open source framework for processing, monitoring, and alerting on time series data Installation Kapacitor has two binaries: kapacitor – a CLI program for calling the Kapacitor API. kapacitord – the Kapacitor server daemon. You can either download the binaries directly from the downloads page or go get them: Configuration An example configuration file can be found here Kapacitor can also provide an example config for you using this command: Getting Started This README gives you a high level overview of what Kapacitor is and what its like to use it. As well as some details of how it works. To get started…
read the full kapacitor overview →
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Frequently asked questions
Is Uptime Kuma or kapacitor more popular?
Uptime Kuma has 93,190 GitHub stars and kapacitor has 2,378. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and kapacitor free?
Both are open source. Uptime Kuma is licensed under MIT and kapacitor under MIT. Neither carries a licence fee.
What is the difference between Uptime Kuma and kapacitor?
Uptime Kuma is written in JavaScript and kapacitor 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 kapacitor?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose kapacitor if its feature set, stack or MIT licence fits better. Both are self-hostable.