Comparison

Apache Flink vs Estuary Flow

On the evidence we track, Estuary Flow leads this comparison with a composite score of 80/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Apache Flink full profile →Estuary Flow full profile →

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Apache Flink58

★Estuary Flow80

Attribute comparison across 2 tools
Attribute	Apache Flink	Estuary FlowLeader
Vioscale score	58 / 100medium · 56%	80 / 100medium · 71%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	low
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	17	200
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Scorecardsecurity.scorecard	6.1	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.flink%3Aflink-clients_2.11&per_page=100 · Last 12m: 0	-
Reliability
Sla pctreliability.sla_pct	-	99.9
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	1,372	-
Github starsadoption.github_stars	26,293	-
Package downloads weeklyadoption.package_downloads_weekly	50,231	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
License
Spdxlicense.spdx	Apache-2.0	-
Language
Primarylanguage.primary	Java	-

Score

Vioscale score

Apache Flink58 / 100medium · 56%

Estuary Flow80 / 100medium · 71%

Pricing

Free tier

Apache Flink✓

Estuary Flow✓

Model

Apache Flinkopen_source

Estuary Flowfreemium

Price level

Apache Flinkfree

Estuary Flowlow

Transparent

Apache Flink✓

Estuary Flow✓

Integrations

Count

Apache Flink17

Estuary Flow200

Security

Disclosure policy

Apache Flink✓

Estuary Flow–

Gdpr

Apache Flink–

Estuary Flow✓

Hipaa

Apache Flink–

Estuary Flow✓

Scorecard

Apache Flink6.1

Estuary Flow–

Soc2

Apache Flink–

Estuary Flow✓

Vulnerabilities

Apache FlinkCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.flink%3Aflink-clients_2.11&per_page=100 · Last 12m: 0

Estuary Flow–

Reliability

Sla pct

Apache Flink–

Estuary Flow99.9

Status page

Apache Flink–

Estuary Flow✓

Adoption

Dependent repos

Apache Flink1,372

Estuary Flow–

Github stars

Apache Flink26,293

Estuary Flow–

Package downloads weekly

Apache Flink50,231

Estuary Flow–

Activity

Commits last 30d

Apache Flink100

Estuary Flow–

License

Spdx

Apache FlinkApache-2.0

Estuary Flow–

Language

Primary

Apache FlinkJava

Estuary Flow–

Capabilities

Feature-by-feature on the axes that matter for data engineering tools. “-” means undocumented, not absent.

Capability comparison for Data Engineering Tools
Capability	Apache Flink	Estuary Flow
Core
Tool role	Processing engine	ELT / ingestion
Processing paradigm	Batch + streaming	Batch + streaming
Connectivity
Connector count	17+	200+
CDC / log-based replication	-	✓
Transformation
In-warehouse transformation (push-down)	-	-
dbt-native orchestration	-	-
Deployment
Self-hosted / open-source available	✓	✓
Managed cloud available	-	✓
Governance
Data lineage / asset catalog	-	-
Authoring
Python-first authoring	-	-
Execution
Incremental / partition-aware runs	✓	✓
Quality
Built-in data quality / tests	-	-
Scale
Horizontal scale (distributed executor)	✓	✓

Core

Tool role

Apache FlinkProcessing engine

Estuary FlowELT / ingestion

Processing paradigm

Apache FlinkBatch + streaming

Estuary FlowBatch + streaming

Connectivity

Connector count

Apache Flink17+

Estuary Flow200+

CDC / log-based replication

Apache Flink-

Estuary Flow✓

Transformation

In-warehouse transformation (push-down)

Apache Flink-

Estuary Flow-

dbt-native orchestration

Apache Flink-

Estuary Flow-

Deployment

Self-hosted / open-source available

Apache Flink✓

Estuary Flow✓

Managed cloud available

Apache Flink-

Estuary Flow✓

Governance

Data lineage / asset catalog

Apache Flink-

Estuary Flow-

Authoring

Python-first authoring

Apache Flink-

Estuary Flow-

Execution

Incremental / partition-aware runs

Apache Flink✓

Estuary Flow✓

Quality

Built-in data quality / tests

Apache Flink-

Estuary Flow-

Scale

Horizontal scale (distributed executor)

Apache Flink✓

Estuary Flow✓

What each one is

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

Apache Flink

A framework that processes real-time streams and batch data at scale, enabling stateful computations with low latency and high throughput across distributed clusters.

Independently observed

Estuary Flow

Leader

Estuary provides real-time and batch data movement across hundreds of systems using log-based change capture, event streaming, and traditional extract-load patterns, all without requiring code or infrastructure management. It's designed to power analytics, operational systems, and AI applications with sub-100ms latency in a single managed service.

Independently observed

Pricing

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

Apache Flink

Open sourceFree tier

as of 2026-08-14verify ↗

Estuary Flow

Leader

from $0.50/moUsage-basedFree tier30-day trial

Usage-based: $0.50/GB + $100/connector/month. Free tier: 10GB/month.

Developer FreeFree
- Access to Cloud Plan features
- 10GB/month data limit
- 2 concurrent connectors
- Cloud deployment
Cloud$0.50/GB + $100/connector, billed monthly
- 200+ fully-managed connectors
- Unlimited users
- Millisecond latency or batch
- Role-based access control (RBAC)
- Bring your own cloud storage
- +8 more
EnterpriseContact sales
- All Cloud features
- Volume-based discounts
- SOC 2 & HIPAA compliance reports
- Single sign-on (SSO)
- Custom SLA terms
- +9 more

as of 2026-08-03verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Apache Flink	Estuary Flow
WebPlatforms	✗	✓
macOSPlatforms	✓	✗
WindowsPlatforms	✓	✗
LinuxPlatforms	✓	✗
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✗

Platforms

Web

Apache Flink✗

Estuary Flow✓

macOS

Apache Flink✓

Estuary Flow✗

Windows

Apache Flink✓

Estuary Flow✗

Linux

Apache Flink✓

Estuary Flow✗

CLI

Apache Flink✓

Estuary Flow✗

Deployment

Cloud / SaaS

Apache Flink✓

Estuary Flow✓

Self-hosted

Apache Flink✓

Estuary Flow✓

On-premise

Apache Flink✓

Estuary Flow✗

Integrations

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

In common (4)

Elasticsearch
MongoDB
Amazon Kinesis
Amazon DynamoDB

Apache Flink

17 total - 13 not shared

Kafka
Cassandra
OpenSearch
RabbitMQ
Google Cloud Pub/Sub
Apache Pulsar
JDBC
Apache HBase
Apache Hive
Amazon Firehose
Apache Kudu
Prometheus
HTTP

Independently observed

Estuary Flow

Leader

27 total - 23 not shared

Oracle
MySQL
PostgreSQL
Amazon S3
Google Cloud Storage
Azure Blob Storage
NetSuite
HubSpot
Salesforce
Google Pub/Sub
Apache Kafka
Snowflake
Google BigQuery
Amazon Redshift
Pinecone
OpenAI
Databricks
Facebook Ads
LinkedIn Ads
Google Ads
SingleStore
Motherduck
Apache Iceberg

Independently observed

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