Fluentd
Open-source event collector for unified log aggregation
- Vendor
- Cloud Native Computing Foundation
- Also known as
- fluentd
What is Fluentd?
Collects event data from various sources and forwards it to multiple destinations including databases, cloud services, and data platforms. Designed to centralize log infrastructure across applications and systems.
Fluentd pricing
We don't have Fluentd's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Fluentd does
The capabilities that matter for log management software, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Pipeline role
- Shipper
- Full-text log search
- -
- Live tail / stream
- -
- Structured parsing
- ✓
- PII redaction at ingest
- -
- Log-based alerting
- -
- Dashboards / visualisation
- -
- Retention tiering
- -
- Object-store columnar backend
- -
- OpenTelemetry logs
- -
- Query language
- -
- Hosting
- Self-hosted only
Platform & deployment
Independently observed- CLI
- macOS
- Linux
- Windows
- Self-hosted
Security & compliance
Independently observed- Third-party security auditactive · Cure53
Known vulnerabilities: 7 (4 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
Fluentd FAQ
Common questions about Fluentd, answered from independent, dated evidence.
What is Fluentd?
Fluentd is an open source data collector that consolidates logs and events from multiple applications and systems into a unified pipeline, enabling better data routing, processing, and consumption across your infrastructure. It is indexed under Log Management Software.
Source: https://www.fluentd.org/
Is Fluentd free to use?
Fluentd is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.
Source: https://www.fluentd.org/
What platforms does Fluentd support?
Fluentd supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://www.fluentd.org/
Can Fluentd be self-hosted?
Yes. Fluentd can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://www.fluentd.org/
Is Fluentd open source?
Yes. Fluentd is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Fluentd alternatives
Other log management software we track, ranked by the same independent score.
- MezmoAn observability and telemetry pipeline platform for managing data flow from sources through processing to destinationsmedium · 71%
- Grafana LokiLog aggregation platform using label-based indexing for cost-effective storage and log searchinghigh · 75%
- Elastic (ELK Stack)medium · 67%
- OpenObserveOpen-source unified observability platform with transparent pay-per-GB pricing and significantly lower storage costs than alternativesmedium · 70%
- Datadog LogsCentralized platform for collecting, analyzing, and searching logs across cloud infrastructure at scalelow · 48%
- PapertrailSimplified log aggregation and monitoringlow · 49%
Compare Fluentd
Side by side against other log management software, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Fluentd, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Integrations | 78 | 0.07 | 5.6 | ✓ |
| Dependent projects | 58 | 0.06 | 3.7 | ✓ |
| Security score | 87 | 0.04 | 3.7 | ✓ |
| Development activity | 37 | 0.09 | 3.5 | ✓ |
| Release cadence | 61 | 0.05 | 3.2 | ✓ |
| Stars | 78 | 0.03 | 2.0 | ✓ |
| Capabilities | 29 | 0.06 | 1.8 | ✓ |
| Security posture | 0 | 0.12 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 14 | mediumsource · 2026-09-10 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 67% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Hosting: self · Log role: shipper · Structured parsing: Yes | mediumsource · 2026-09-14 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 500 | mediumsource · 2026-08-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Ruby | highsource · 2026-09-10 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-09-10 · 95% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Scorecard | 8.7 | highsource · 2026-09-10 · 90% |
| Vulnerabilities | Count: 7 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=fluentd&per_page=100 · Last 12m: 4 · Max severity: CRITICAL | highsource · 2026-09-10 · 90% |
| Certifications | Third-party security audit | mediumsource · 2026-09-14 · 60% |
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