head to head · open source
metrics vs Logstash
metrics has 17,202 GitHub stars, 2,275 forks, 68 open issues and last shipped 4 months ago. Logstash has 14,944 stars, 3,496 forks, 2,254 open issues and last shipped yesterday. metrics leads on adoption by 15% (17,202 vs 14,944 stars). metrics is written in JavaScript under MIT; Logstash is written in Java under a custom or non-standard licence. metrics has attracted 13% as many forks as stars, Logstash 23%. Logstash 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
| metrics | Logstash | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 15K |
| License | MIT | Custom / other |
| Written in | JavaScript | Java |
| Last push | 2026-05-29 | 2026-09-17 |
| Forks | ⑂ 2.3K | ⑂ 3.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick metrics if
- You weight community size — 17K 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 metrics
Metrics is an infographics generator for GitHub accounts, published under the MIT license and written in JavaScript. It lives in the GitHub ecosystem as a GitHub Action and as a hosted web service, and it produces statistics about a user, an organization, or a repository. The output is rendered as SVG, Markdown, PDF, or JSON, which means the same generated figures can be embedded in a profile readme, attached to a blog post, or consumed by another tool.
read the full metrics 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 metrics or Logstash more popular?
metrics has 17,202 GitHub stars and Logstash has 14,944. metrics has the larger community by that measure.
Are metrics and Logstash free?
Both are open source. metrics is licensed under MIT, and Logstash has no licence declared in this registry. Both are free to self-host.
What is the difference between metrics and Logstash?
metrics 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, metrics or Logstash?
Choose metrics if you want the larger community (17,202 stars) or its MIT licence terms. Choose Logstash if its feature set, stack or Custom / other licence fits better. Both are self-hostable.