head to head · open source
SigNoz vs telemetry
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. telemetry has 922 stars, 74 forks, 6 open issues and last shipped 29 days ago. SigNoz leads on adoption by 3,387% (32,146 vs 922 stars). SigNoz is written in TypeScript under a custom or non-standard licence; telemetry is written in Erlang under Apache-2.0. SigNoz has attracted 8% as many forks as stars, telemetry 8%. 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 | telemetry | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 922 |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Erlang |
| Last push | 2026-09-20 | 2026-08-22 |
| Forks | ⑂ 2.5K | ⑂ 74 |
| 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 telemetry if
- You want the telemetry feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Erlang
- You evaluated both and telemetry 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 telemetry
Telemetry is a lightweight Erlang and Elixir library for dynamic dispatching of events, aimed at library authors who need to emit instrumentation and at application developers who want to hook custom handlers onto those events.
read the full telemetry overview →
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Frequently asked questions
Is SigNoz or telemetry more popular?
SigNoz has 32,146 GitHub stars and telemetry has 922. SigNoz has the larger community by that measure.
Are SigNoz and telemetry free?
Both are open source. SigNoz has no licence declared in this registry, and telemetry is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and telemetry?
SigNoz is written in TypeScript and telemetry in Erlang. 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 telemetry?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose telemetry if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.