head to head · open source
SigNoz vs fsmon
SigNoz has 32,146 GitHub stars, 2,497 forks, 1,557 open issues and last shipped today. fsmon has 1,028 stars, 162 forks, 21 open issues and last shipped 5 months ago. SigNoz leads on adoption by 3,027% (32,146 vs 1,028 stars). SigNoz is written in TypeScript under a custom or non-standard licence; fsmon is written in C under MIT. SigNoz has attracted 8% as many forks as stars, fsmon 16%. SigNoz was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | fsmon | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 1.0K |
| License | Custom / other | MIT |
| Written in | TypeScript | C |
| Last push | 2026-09-20 | 2026-04-11 |
| Forks | ⑂ 2.5K | ⑂ 162 |
| 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 fsmon if
- You want the fsmon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C
- You evaluated both and fsmon 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 fsmon
fsmon is a low level, cross platform filesystem monitor that reports kernel level file events on Linux, Android, iOS and macOS as colourful terminal output or JSON, built for system administrators, incident responders, security researchers, forensic analysts, developers debugging I/O heavy applications, and reverse engineers.
read the full fsmon overview →
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Frequently asked questions
Is SigNoz or fsmon more popular?
SigNoz has 32,146 GitHub stars and fsmon has 1,028. SigNoz has the larger community by that measure.
Are SigNoz and fsmon free?
Both are open source. SigNoz has no licence declared in this registry, and fsmon is licensed under MIT. Both are free to self-host.
What is the difference between SigNoz and fsmon?
SigNoz is written in TypeScript and fsmon in C. 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 fsmon?
Choose SigNoz if you want the larger community (32,146 stars) or its Custom / other licence terms. Choose fsmon if its feature set, stack or MIT licence fits better. Both are self-hostable.