head to head · open source
SigNoz vs Grafana Loki
SigNoz has 32,509 GitHub stars, 2,573 forks, 1,557 open issues and last shipped yesterday. Grafana Loki has 29,111 stars, 4,169 forks, 1,620 open issues and last shipped yesterday. SigNoz leads on adoption by 12% (32,509 vs 29,111 stars). SigNoz is written in TypeScript under a custom or non-standard licence; Grafana Loki is written in Go under AGPL-3.0. SigNoz has attracted 8% as many forks as stars, Grafana Loki 14%. Grafana Loki 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 | Grafana Loki | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 29K |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.6K | ⑂ 4.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SigNoz if
- You weight community size — 33K 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 Grafana Loki if
- You want the Grafana Loki feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and Grafana Loki fits your workflow better
About SigNoz
中文 · Deutsch · Português SigNoz is an open source observability platform built on OpenTelemetry. We’re building an enterprise grade alternative to fragmented monitoring stacks, with logs, metrics, traces, alerts, and dashboards in one place. Choose how to run SigNoz SigNoz Cloud (Recommended) Fully managed SigNoz with a 30 day free trial, no credit card required, usage based pricing that starts at $49, and regional data hosting. Start free → Enterprise Enterprise Cloud, BYOC, or Enterprise Self Hosted with compliance, support, custom retention, RBAC, ingestion controls, data residency, and region selection…
read the full SigNoz overview →
About Grafana Loki
Loki: like Prometheus, but for logs. Loki is a horizontally scalable, highly available, multi tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream. Compared to other log aggregation systems, Loki: does not do full text indexing on logs. By storing compressed, unstructured logs and only indexing metadata, Loki is simpler to operate and cheaper to run. indexes and groups log streams using the same labels you’re already using with Prometheus, enabling you to…
read the full Grafana Loki overview →
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Frequently asked questions
Is SigNoz or Grafana Loki more popular?
SigNoz has 32,509 GitHub stars and Grafana Loki has 29,111. SigNoz has the larger community by that measure.
Are SigNoz and Grafana Loki free?
Both are open source. SigNoz has no licence declared in this registry, and Grafana Loki is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between SigNoz and Grafana Loki?
SigNoz is written in TypeScript and Grafana Loki in Go. 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 Grafana Loki?
Choose SigNoz if you want the larger community (32,509 stars) or its Custom / other licence terms. Choose Grafana Loki if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.