head to head · open source
Uptime Kuma vs opentelemetry-ruby
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. opentelemetry-ruby has 613 stars, 303 forks, 144 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 15,102% (93,190 vs 613 stars). Uptime Kuma is written in JavaScript under MIT; opentelemetry-ruby is written in Ruby under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, opentelemetry-ruby 49%. 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 | opentelemetry-ruby | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 613 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Ruby |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 303 |
| 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-ruby if
- You want the opentelemetry-ruby feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Ruby
- You evaluated both and opentelemetry-ruby 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 opentelemetry-ruby
OpenTelemetry Ruby [![Slack channel][slack image]][slack url] [![GitHub Discussions][discussions image]][discussions url] [![CI][ci image]][ci url] [![Apache License][license image]][license image] [![OpenSSF Scorecard for opentelemetry ruby contrib][openssf scorecard image]][openssf scorecard url] [![FOSSA License Status][fossa license image]][fossa license url] [![FOSSA Security Status][fossa security image]][fossa security url] The Ruby OpenTelemetry client. [Getting Started][getting started] Contributing Contrib Repository [Instrumentation Libraries][contrib instrumentations] Versioning Useful links License…
read the full opentelemetry-ruby overview →
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Frequently asked questions
Is Uptime Kuma or opentelemetry-ruby more popular?
Uptime Kuma has 93,190 GitHub stars and opentelemetry-ruby has 613. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and opentelemetry-ruby free?
Both are open source. Uptime Kuma is licensed under MIT and opentelemetry-ruby under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and opentelemetry-ruby?
Uptime Kuma is written in JavaScript and opentelemetry-ruby in Ruby. 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-ruby?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose opentelemetry-ruby if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.