head to head · open source
SigNoz vs openwolf
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. openwolf has 2,351 stars, 212 forks, 56 open issues and last shipped 5 days ago. SigNoz leads on adoption by 1,267% (32,146 vs 2,351 stars). SigNoz is written in TypeScript under a custom or non-standard licence; openwolf is written in TypeScript under AGPL-3.0. SigNoz has attracted 8% as many forks as stars, openwolf 9%. 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 | openwolf | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 2.4K |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-15 |
| Forks | ⑂ 2.5K | ⑂ 212 |
| 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 openwolf if
- You want the openwolf feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and openwolf 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 openwolf
OpenWolf is an open source TypeScript tool that keeps portable project memory for coding agents such as Claude Code, Codex and OpenCode and measures token usage from harness transcripts, aimed at developers who lose context between sessions or across agents.
read the full openwolf overview →
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Frequently asked questions
Is SigNoz or openwolf more popular?
SigNoz has 32,146 GitHub stars and openwolf has 2,351. SigNoz has the larger community by that measure.
Are SigNoz and openwolf free?
Both are open source. SigNoz has no licence declared in this registry, and openwolf is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between SigNoz and openwolf?
SigNoz is written in TypeScript and openwolf in TypeScript. 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 openwolf?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose openwolf if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.