head to head · open source
SigNoz vs loongcollector
SigNoz has 32,525 GitHub stars, 2,576 forks, 1,557 open issues and last shipped yesterday. loongcollector has 2,214 stars, 456 forks, 166 open issues and last shipped 2 days ago. SigNoz leads on adoption by 1,369% (32,525 vs 2,214 stars). SigNoz is written in TypeScript under a custom or non-standard licence; loongcollector is written in C++ under Apache-2.0. SigNoz has attracted 8% as many forks as stars, loongcollector 21%. SigNoz was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (apm, log, 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 | loongcollector | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 2.2K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | C++ |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 2.6K | ⑂ 456 |
| 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 loongcollector if
- You want the loongcollector feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and loongcollector 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 loongcollector
LoongCollector High Performance Observability Data Collector Fast, Lightweight, and Battle Tested Observability Agent Quick Start • Documentation • Performance Benchmarks • Contributing Why LoongCollector? LoongCollector is a high performance, lightweight observability data collector designed for modern cloud native environments. Born from Alibaba's 15 year journey handling exponential traffic growth and powering tens of millions of deployments, LoongCollector delivers 10x higher throughput with 80% lower resource usage compared to open source alternatives. LoongCollector is a key component of…
read the full loongcollector overview →
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Frequently asked questions
Is SigNoz or loongcollector more popular?
SigNoz has 32,525 GitHub stars and loongcollector has 2,214. SigNoz has the larger community by that measure.
Are SigNoz and loongcollector free?
Both are open source. SigNoz has no licence declared in this registry, and loongcollector is licensed under Apache-2.0. Both are free to self-host.
What is the difference between SigNoz and loongcollector?
SigNoz is written in TypeScript and loongcollector 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 loongcollector?
Choose SigNoz if you want the larger community (32,525 stars) or its Custom / other licence terms. Choose loongcollector if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.