head to head · open source
SigNoz vs openmessaging-java
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. openmessaging-java has 723 stars, 219 forks, 13 open issues and last shipped 8 months ago. SigNoz leads on adoption by 4,346% (32,146 vs 723 stars). SigNoz is written in TypeScript under a custom or non-standard licence; openmessaging-java is written in Java under Apache-2.0. SigNoz has attracted 8% as many forks as stars, openmessaging-java 30%. SigNoz was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (metrics), 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
| SigNoz | openmessaging-java | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 723 |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-09-20 | 2026-01-26 |
| Forks | ⑂ 2.5K | ⑂ 219 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SigNoz if
- You weight community size — 32K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick openmessaging-java if
- You want the openmessaging-java feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and openmessaging-java fits your workflow better
About SigNoz
SigNoz is an open source, OpenTelemetry native observability platform for cloud native applications. It unifies logs, metrics, traces, alerts, and dashboards into a single tool, replacing fragmented monitoring stacks with a correlated signal pipeline. It lives in the observability ecosystem alongside tools like Prometheus, Jaeger, and Grafana, and is positioned as an open alternative to Datadog.
read the full SigNoz overview →
About openmessaging-java
OpenMessaging for Java is the vendor neutral Java runtime interface for distributed messaging and streaming, published as the io.openmessaging:openmessaging api artifact on Maven Central, and it is aimed at developers and platform teams who need messaging applications to run across heterogeneous brokers and operating systems instead of one vendor's proprietary client API.
read the full openmessaging-java overview →
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Frequently asked questions
Is SigNoz or openmessaging-java more popular?
SigNoz has 32,146 GitHub stars and openmessaging-java has 723. SigNoz has the larger community by that measure.
Are SigNoz and openmessaging-java free?
Both are open source. SigNoz has no licence declared in this registry, and openmessaging-java is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and openmessaging-java?
SigNoz is written in TypeScript and openmessaging-java 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, SigNoz or openmessaging-java?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose openmessaging-java if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.