Comparison

Elastic (ELK Stack) vs Fluentd

On the evidence we track, Elastic (ELK Stack) leads this comparison with a composite score of 68/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Elastic (ELK Stack) full profile →Fluentd full profile →

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★Elastic (ELK Stack)68

Fluentd58

Attribute comparison across 2 tools
Attribute	Elastic (ELK Stack)Leader	Fluentd
Vioscale score	68 / 100medium · 68%updating	58 / 100low · 43%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	high	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	35	500
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	6.9	8.6
Vulnerabilitiessecurity.vulnerabilities	Count: 45 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.elasticsearch%3Aelasticsearch&per_page=100 · Last 12m: 2 · Max severity: HIGH	Count: 7 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=fluentd&per_page=100 · Last 12m: 4 · Max severity: CRITICAL
Reliability
Sla pctreliability.sla_pct	99.95	-
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	18,551	3,044
Github starsadoption.github_stars	77,862	13,578
Activity
Commits last 30dactivity.commits_last_30d	100	23
Release
Cadence daysrelease.cadence_days	-	70
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	Java	Ruby
Market
Availabilitymarket.availability	Available worldwide · Popular in US, GB · HQ US	-

Score

Vioscale score

Elastic (ELK Stack)68 / 100medium · 68%updating

Fluentd58 / 100low · 43%updating

Pricing

Free tier

Elastic (ELK Stack)✓

Fluentd✓

Model

Elastic (ELK Stack)commercial

Fluentdcommercial

Price level

Elastic (ELK Stack)high

Fluentdfree

Transparent

Elastic (ELK Stack)✓

Fluentd–

Integrations

Count

Elastic (ELK Stack)35

Fluentd500

Security

Disclosure policy

Elastic (ELK Stack)✓

Fluentd–

Gdpr

Elastic (ELK Stack)✓

Fluentd–

Iso27001

Elastic (ELK Stack)✓

Fluentd–

Scorecard

Elastic (ELK Stack)6.9

Fluentd8.6

Vulnerabilities

Elastic (ELK Stack)Count: 45 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.elasticsearch%3Aelasticsearch&per_page=100 · Last 12m: 2 · Max severity: HIGH

FluentdCount: 7 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=fluentd&per_page=100 · Last 12m: 4 · Max severity: CRITICAL

Reliability

Sla pct

Elastic (ELK Stack)99.95

Fluentd–

Status page

Elastic (ELK Stack)✓

Fluentd–

Adoption

Dependent repos

Elastic (ELK Stack)18,551

Fluentd3,044

Github stars

Elastic (ELK Stack)77,862

Fluentd13,578

Activity

Commits last 30d

Elastic (ELK Stack)100

Fluentd23

Release

Cadence days

Elastic (ELK Stack)–

Fluentd70

History

Elastic (ELK Stack)20 items

Fluentd20 items

License

Spdx

Elastic (ELK Stack)–

FluentdApache-2.0

Language

Primary

Elastic (ELK Stack)Java

FluentdRuby

Market

Availability

Elastic (ELK Stack)Available worldwide · Popular in US, GB · HQ US

Fluentd–

Capabilities

Feature-by-feature on the axes that matter for log management software. “-” means undocumented, not absent.

Capability comparison for Log Management Software
Capability	Elastic (ELK Stack)	Fluentd
Core
Pipeline role	End-to-end platform	Shipper
Search
Full-text log search	✓	-
Live tail / stream	✓	-
Processing
Structured parsing	✓	✓
PII redaction at ingest	-	-
Ops
Log-based alerting	✓	-
Dashboards / visualisation	✓	-
Storage
Retention tiering	✓	-
Object-store columnar backend	✗	-
Interop
OpenTelemetry logs	-	-
Query language	ES\|QL (with native PromQL support)	-
Deployment
Hosting	Cloud + self-hosted	Self-hosted only

Core

Pipeline role

Elastic (ELK Stack)End-to-end platform

FluentdShipper

Full-text log search

Elastic (ELK Stack)✓

Fluentd-

Live tail / stream

Elastic (ELK Stack)✓

Fluentd-

Processing

Structured parsing

Elastic (ELK Stack)✓

Fluentd✓

PII redaction at ingest

Elastic (ELK Stack)-

Fluentd-

Ops

Log-based alerting

Elastic (ELK Stack)✓

Fluentd-

Dashboards / visualisation

Elastic (ELK Stack)✓

Fluentd-

Storage

Retention tiering

Elastic (ELK Stack)✓

Fluentd-

Object-store columnar backend

Elastic (ELK Stack)✗

Fluentd-

Interop

OpenTelemetry logs

Elastic (ELK Stack)-

Fluentd-

Query language

Elastic (ELK Stack)ES|QL (with native PromQL support)

Fluentd-

Deployment

Hosting

Elastic (ELK Stack)Cloud + self-hosted

FluentdSelf-hosted only

What each one is

The product in its own terms, so the numbers below have context.

Elastic (ELK Stack)

Leader

A cloud-based observability and search platform that ingests logs from multiple sources, automatically structures them with AI, and enables full-text search, alerting, dashboards, and machine learning analysis on unstructured data.

Independently observed

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.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Elastic (ELK Stack)

Leader

from $99/moSubscriptionFree tier14-day trial

From $99/month. Subscription model with free 14-day trial. Usage-based pricing for cloud resources (120 GB storage / 2 zones baseline).

StandardFrom $99/month. Free 14-day trial.
- Distributed Elasticsearch Platform on AWS, Azure, GCP
- Elasticsearch Query Language (ES|QL)
- AutoOps monitoring
- Hundreds of out-of-the-box integrations
- Discover, dashboards, alerting
- +4 more
GoldFrom $114/month. Includes reporting and third-party integrations.
- Everything in Standard
- Reporting
- Third-party alerting actions
- Watcher
- Enterprise Search
- +2 more
PlatinumFrom $131/month. ML and advanced security included.
- Everything in Gold
- Advanced security features
- Machine learning: anomaly detection, supervised learning
- Cross-cluster replication
- Semantic and vector search with ML models (ELSER, e5)
- +5 more
EnterpriseFrom $184/month. Full AI suite and advanced automation.
- Everything in Platinum
- Searchable snapshots in cold/frozen tiers
- Elastic Maps Server
- Cross-cluster search and ES|QL Data Federation
- GPU inference with Elastic Inference Service
- +10 more

as of 2026-08-14verify ↗

Fluentd

Open sourceFree tier

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Elastic (ELK Stack)	Fluentd
WebPlatforms	✓	✗
macOSPlatforms	✗	✓
WindowsPlatforms	✗	✓
LinuxPlatforms	✗	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓
HybridDeployment	✓	✗

Platforms

Web

Elastic (ELK Stack)✓

Fluentd✗

macOS

Elastic (ELK Stack)✗

Fluentd✓

Windows

Elastic (ELK Stack)✗

Fluentd✓

Linux

Elastic (ELK Stack)✗

Fluentd✓

CLI

Elastic (ELK Stack)✓

Fluentd✓

Deployment

Cloud / SaaS

Elastic (ELK Stack)✓

Fluentd✗

Self-hosted

Elastic (ELK Stack)✓

Fluentd✓

Hybrid

Elastic (ELK Stack)✓

Fluentd✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Elastic (ELK Stack)

Leader

31 total

OpenAI
Anthropic
Jina AI
Amazon Bedrock
Google Vertex AI
Microsoft Azure AI
Mistral
Cohere
Hugging Face
NVIDIA
IBM watsonx
LlamaIndex
LangChain
Vectorize.io
Slack
Jira
PagerDuty
ServiceNow
Microsoft Teams
xMatters
IBM Resilient
Filebeat
Metricbeat
Heartbeat
+7 more

Independently observed

Fluentd

Not documented yet.

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.