head to head · open source
SigNoz vs client_python
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. client_python has 4,375 stars, 876 forks, 150 open issues and last shipped 5 days ago. SigNoz leads on adoption by 635% (32,146 vs 4,375 stars). SigNoz is written in TypeScript under a custom or non-standard licence; client_python is written in Python under Apache-2.0. SigNoz has attracted 8% as many forks as stars, client_python 20%. 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 | client_python | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 4.4K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-20 | 2026-09-15 |
| Forks | ⑂ 2.5K | ⑂ 876 |
| 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 client_python if
- You want the client_python feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and client_python 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 client_python
client python is the official Prometheus instrumentation library for Python applications, letting Python code expose metrics that a Prometheus server collects, and it is aimed at Python developers and reliability engineers who need their services measurable inside a Prometheus monitoring stack.
read the full client_python overview →
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Frequently asked questions
Is SigNoz or client_python more popular?
SigNoz has 32,146 GitHub stars and client_python has 4,375. SigNoz has the larger community by that measure.
Are SigNoz and client_python free?
Both are open source. SigNoz has no licence declared in this registry, and client_python is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and client_python?
SigNoz is written in TypeScript and client_python in Python. 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 client_python?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose client_python if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.