head to head · open source
Uptime Kuma vs skywalking-java
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. skywalking-java has 928 stars, 694 forks, 0 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 9,942% (93,190 vs 928 stars). Uptime Kuma is written in JavaScript under MIT; skywalking-java is written in Java under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, skywalking-java 75%. skywalking-java 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 | skywalking-java | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 928 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 694 |
| 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 skywalking-java if
- You want the skywalking-java feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and skywalking-java 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…
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About skywalking-java
Apache SkyWalking Java Agent ========== SkyWalking Java: The Java Agent for Apache SkyWalking, which provides the native tracing/metrics/logging abilities for Java projects. SkyWalking: an APM(application performance monitor) system, especially designed for microservices, cloud native and container based (Docker and Kubernetes) architectures. Documentation Official documentation Downloads Please head to the releases page to download a release of Apache SkyWalking. Code of conduct This project adheres to the Contributor Covenant code of conduct. By participating, you are expected to uphold this code. Please…
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Frequently asked questions
Is Uptime Kuma or skywalking-java more popular?
Uptime Kuma has 93,190 GitHub stars and skywalking-java has 928. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and skywalking-java free?
Both are open source. Uptime Kuma is licensed under MIT and skywalking-java under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and skywalking-java?
Uptime Kuma is written in JavaScript and skywalking-java in Java. 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 skywalking-java?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose skywalking-java if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.