head to head · open source
Uptime Kuma vs flogger
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. flogger has 1,481 stars, 134 forks, 53 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 6,192% (93,190 vs 1,481 stars). Uptime Kuma is written in JavaScript under MIT; flogger is written in Java under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, flogger 9%. flogger 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 | flogger | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 1.5K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 134 |
| 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 flogger if
- You want the flogger 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 flogger 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 flogger
Flogger: A Fluent Logging API for Java What is it? Flogger is a fluent logging API for Java. It supports a wide variety of features, and has [many benefits] over existing logging APIs. Come for more self documenting log statements: Stay for additional features that help you manage your logging better: Benefits While some users prefer "fluency" as a style, this is not what the argument for Flogger rests on. Flogger offers these key, concrete advantages over other logging APIs: Logging at disabled levels is [effectively free]. Finally, you can add as many fine grained log statements to your code as you want…
read the full flogger overview →
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Frequently asked questions
Is Uptime Kuma or flogger more popular?
Uptime Kuma has 93,190 GitHub stars and flogger has 1,481. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and flogger free?
Both are open source. Uptime Kuma is licensed under MIT and flogger under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and flogger?
Uptime Kuma is written in JavaScript and flogger 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 flogger?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose flogger if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.