head to head · open source
Uptime Kuma vs opentelemetry-js
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. opentelemetry-js has 3,515 stars, 1,193 forks, 235 open issues and last shipped 2 days ago. Uptime Kuma leads on adoption by 2,551% (93,190 vs 3,515 stars). Uptime Kuma is written in JavaScript under MIT; opentelemetry-js is written in TypeScript under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, opentelemetry-js 34%. Uptime Kuma 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 | opentelemetry-js | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 3.5K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 8.7K | ⑂ 1.2K |
| 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 opentelemetry-js if
- You want the opentelemetry-js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and opentelemetry-js 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 opentelemetry-js
Getting Started • API and SDK Reference Contributing • Examples About this project This is the JavaScript version of OpenTelemetry, a framework for collecting traces, metrics, and logs from applications. Quick Start Much of OpenTelemetry JS documentation is written assuming the compiled application is run as CommonJS. For more details on ECMAScript Modules vs CommonJS, refer to esm support. The following describes how to set up tracing for a basic web application. For more detailed documentation, see the website at . Installation Dependencies with the latest tag on NPM should be compatible with each…
read the full opentelemetry-js overview →
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Frequently asked questions
Is Uptime Kuma or opentelemetry-js more popular?
Uptime Kuma has 93,190 GitHub stars and opentelemetry-js has 3,515. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and opentelemetry-js free?
Both are open source. Uptime Kuma is licensed under MIT and opentelemetry-js under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and opentelemetry-js?
Uptime Kuma is written in JavaScript and opentelemetry-js in TypeScript. 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 opentelemetry-js?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose opentelemetry-js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.