head to head · open source
Uptime Kuma vs openGemini
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. openGemini has 1,175 stars, 175 forks, 117 open issues and last shipped 10 days ago. Uptime Kuma leads on adoption by 7,687% (91,498 vs 1,175 stars). Uptime Kuma is written in JavaScript under MIT; openGemini is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, openGemini 15%. 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 | openGemini | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 1.2K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-09-18 | 2026-09-09 |
| Forks | ⑂ 8.4K | ⑂ 175 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick openGemini if
- You want the openGemini feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and openGemini fits your workflow better
About Uptime Kuma
Uptime Kuma is a free, MIT licensed, self hosted monitoring tool with a reactive web dashboard, built for operators and teams that want to watch their own HTTP, TCP, and DNS endpoints and keep the resulting data on their own infrastructure.
read the full Uptime Kuma overview →
About openGemini
openGemini is a cloud native distributed time series database written in Go and licensed under Apache 2.0, hosted as a CNCF sandbox project and built to store and analyse massive volumes of telemetry data for IoT, observability and DevOps workloads.
read the full openGemini overview →
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Frequently asked questions
Is Uptime Kuma or openGemini more popular?
Uptime Kuma has 91,498 GitHub stars and openGemini has 1,175. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and openGemini free?
Both are open source. Uptime Kuma is licensed under MIT and openGemini under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and openGemini?
Uptime Kuma is written in JavaScript and openGemini in Go. 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 openGemini?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose openGemini if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.