head to head · open source
SigNoz vs tapir
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. tapir has 1,474 stars, 468 forks, 173 open issues and last shipped 3 days ago. SigNoz leads on adoption by 2,081% (32,146 vs 1,474 stars). SigNoz is written in TypeScript under a custom or non-standard licence; tapir is written in Scala under Apache-2.0. SigNoz has attracted 8% as many forks as stars, tapir 32%. SigNoz was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (observability), 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 | tapir | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 1.5K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Scala |
| Last push | 2026-09-20 | 2026-09-17 |
| Forks | ⑂ 2.5K | ⑂ 468 |
| 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 tapir if
- You want the tapir 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 tapir 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 tapir
Tapir is a Scala library that lets developers describe an HTTP API once in a type safe, declarative form and then expose that description as a server, consume it as a client, and generate OpenAPI, AsyncAPI, and JSON Schema documentation from it, and it is aimed at Scala teams building HTTP services that want their API documentation to stay in step with their code.
read the full tapir overview →
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Frequently asked questions
Is SigNoz or tapir more popular?
SigNoz has 32,146 GitHub stars and tapir has 1,474. SigNoz has the larger community by that measure.
Are SigNoz and tapir free?
Both are open source. SigNoz has no licence declared in this registry, and tapir is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and tapir?
SigNoz is written in TypeScript and tapir 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 tapir?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose tapir if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.