head to head · open source
Uptime Kuma vs airframe
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. airframe has 666 stars, 67 forks, 105 open issues and last shipped 15 days ago. Uptime Kuma leads on adoption by 13,638% (91,498 vs 666 stars). Uptime Kuma is written in JavaScript under MIT; airframe is written in Scala under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, airframe 10%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | airframe | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 666 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Scala |
| Last push | 2026-09-18 | 2026-09-04 |
| Forks | ⑂ 8.4K | ⑂ 67 |
| 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 airframe if
- You want the airframe feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Scala
- You evaluated both and airframe 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 airframe
Airframe is a collection of essential building blocks for Scala applications — logging, JSON and MessagePack serialization, dependency injection, an HTTP server and client with RPC support, and the AirSpec testing framework — aimed at Scala developers building services and libraries.
read the full airframe overview →
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Frequently asked questions
Is Uptime Kuma or airframe more popular?
Uptime Kuma has 91,498 GitHub stars and airframe has 666. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and airframe free?
Both are open source. Uptime Kuma is licensed under MIT and airframe under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and airframe?
Uptime Kuma is written in JavaScript and airframe in Scala. 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 airframe?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose airframe if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.