head to head · open source
Uptime Kuma vs tapir
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. tapir has 1,475 stars, 472 forks, 173 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 6,218% (93,190 vs 1,475 stars). Uptime Kuma is written in JavaScript under MIT; tapir is written in Scala under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, tapir 32%. tapir 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 | tapir | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 1.5K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Scala |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 472 |
| 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 tapir if
- You want the tapir 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 tapir 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 tapir
Welcome! Intro Tapir is a library to describe HTTP APIs, expose them as a server, consume as a client, and automatically document using open standards. Tapir is fast and developer friendly. The endpoint definition APIs are crafted with readability and discoverability in mind. Our Netty based server is one of the best performing Scala HTTP servers available. Tapir integrates with all major Scala stacks, so you can use your favorite approach to Functional Programming, while leveraging all the benefits that Tapir brings! Seamless integration with the Scala and HTTP ecosystems is one of Tapir's major strengths: all…
read the full tapir overview →
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Frequently asked questions
Is Uptime Kuma or tapir more popular?
Uptime Kuma has 93,190 GitHub stars and tapir has 1,475. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and tapir free?
Both are open source. Uptime Kuma is licensed under MIT and tapir under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and tapir?
Uptime Kuma is written in JavaScript and tapir 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 tapir?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose tapir if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.