head to head · open source
SigNoz vs airframe
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. airframe has 666 stars, 67 forks, 105 open issues and last shipped 16 days ago. SigNoz leads on adoption by 4,727% (32,146 vs 666 stars). SigNoz is written in TypeScript under a custom or non-standard licence; airframe is written in Scala under Apache-2.0. SigNoz has attracted 8% as many forks as stars, airframe 10%. 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 | airframe | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 666 |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Scala |
| Last push | 2026-09-20 | 2026-09-04 |
| Forks | ⑂ 2.5K | ⑂ 67 |
| 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 airframe if
- You want the airframe feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Scala
- You evaluated both and airframe 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 airframe
Airframe is a collection of essential building blocks for Scala applications — logging, JSON and MessagePack serialization, dependency injection, an HTTP server and client with RPC support, and the AirSpec testing framework — aimed at Scala developers building services and libraries.
read the full airframe overview →
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Frequently asked questions
Is SigNoz or airframe more popular?
SigNoz has 32,146 GitHub stars and airframe has 666. SigNoz has the larger community by that measure.
Are SigNoz and airframe free?
Both are open source. SigNoz has no licence declared in this registry, and airframe is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and airframe?
SigNoz is written in TypeScript and airframe in Scala. 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 airframe?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose airframe if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.