head to head · open source
SigNoz vs effect
SigNoz has 32,509 GitHub stars, 2,573 forks, 1,557 open issues and last shipped yesterday. effect has 17,464 stars, 892 forks, 253 open issues and last shipped yesterday. SigNoz leads on adoption by 86% (32,509 vs 17,464 stars). SigNoz is written in TypeScript under a custom or non-standard licence; effect is written in TypeScript under MIT. SigNoz has attracted 8% as many forks as stars, effect 5%. effect 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 | effect | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 17K |
| License | Custom / other | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.6K | ⑂ 892 |
| 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 effect if
- You want the effect feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and effect 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 effect
Effect Effect is a library for building robust, maintainable, type safe, and production grade applications in TypeScript. It helps you handle the hard problems at scale: typed errors, dependency injection, structured concurrency, scheduling, tracing, and unified schema validation. Effect V4 is currently a release candidate. The main branch contains v4 development. Install V4 RC Requirements TypeScript 5.9 or newer. TypeScript 7 is recommended for the best performance and compatibility with Effect's TypeScript tooling. Node.js 18 or newer is the general minimum for running Effect on Node.js. Some integration…
read the full effect overview →
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Frequently asked questions
Is SigNoz or effect more popular?
SigNoz has 32,509 GitHub stars and effect has 17,464. SigNoz has the larger community by that measure.
Are SigNoz and effect free?
Both are open source. SigNoz has no licence declared in this registry, and effect is licensed under MIT. Both are free to self-host.
What is the difference between SigNoz and effect?
SigNoz is written in TypeScript and effect 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 effect?
Choose SigNoz if you want the larger community (32,509 stars) or its Custom / other licence terms. Choose effect if its feature set, stack or MIT licence fits better. Both are self-hostable.