head to head · open source
Uptime Kuma vs alloy
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. alloy has 3,662 stars, 760 forks, 1,237 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 2,445% (93,190 vs 3,662 stars). Uptime Kuma is written in JavaScript under MIT; alloy is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, alloy 21%. alloy 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 | alloy | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 3.7K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 760 |
| 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 alloy if
- You want the alloy 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 alloy 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 alloy
Grafana Alloy is an open source OpenTelemetry Collector distribution with built in Prometheus pipelines and support for metrics, logs, traces, and profiles. What can Alloy do? Programmable pipelines : Use a rich [expression based syntax][syntax] for configuring powerful observability pipelines. OpenTelemetry Collector Distribution : Alloy is a [distribution][] of OpenTelemetry Collector and supports dozens of its components, alongside new components that make use of Alloy's programmable pipelines. Big tent : Alloy embraces Grafana's "big tent" philosophy, where Alloy can be used with other vendors or open source…
read the full alloy overview →
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Frequently asked questions
Is Uptime Kuma or alloy more popular?
Uptime Kuma has 93,190 GitHub stars and alloy has 3,662. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and alloy free?
Both are open source. Uptime Kuma is licensed under MIT and alloy under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and alloy?
Uptime Kuma is written in JavaScript and alloy 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 alloy?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose alloy if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.