head to head · open source
Uptime Kuma vs Logstash
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. Logstash has 14,944 stars, 3,496 forks, 2,254 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 512% (91,477 vs 14,944 stars). Uptime Kuma is written in JavaScript under MIT; Logstash is written in Java under a custom or non-standard licence. Uptime Kuma has attracted 9% as many forks as stars, Logstash 23%. 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 | Logstash | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 15K |
| License | MIT | Custom / other |
| Written in | JavaScript | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 8.4K | ⑂ 3.5K |
| 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 Logstash if
- You want the Logstash feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Java
- You evaluated both and Logstash 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 Logstash
Logstash is a server side data processing pipeline that transports and processes logs, events, or other data. It is part of the Elastic Stack with Beats, Elasticsearch, and Kibana, and it sits in the Infrastructure & Operations / Monitoring & Observability category. The project uses Java and JRuby, and its topics describe it as an ETL framework for logging, real time processing, and streaming.
read the full Logstash overview →
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Frequently asked questions
Is Uptime Kuma or Logstash more popular?
Uptime Kuma has 91,477 GitHub stars and Logstash has 14,944. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and Logstash free?
Both are open source. Uptime Kuma is licensed under MIT, and Logstash has no licence declared in this registry. Both are free to self-host.
What is the difference between Uptime Kuma and Logstash?
Uptime Kuma is written in JavaScript and Logstash 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 Logstash?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose Logstash if its feature set, stack or Custom / other licence fits better. Both are self-hostable.