# Apache Flink vs Estuary Flow

**Leader by vioscaleAI score:** Estuary Flow

| Attribute | Apache Flink | Estuary Flow |
|---|---|---|
| **vioscaleAI score** | 57.4 (55% (medium)) | 79.5 (72% (medium)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 2,391 | - |
| adoption.github_stars | 26,406 | - |
| adoption.package_downloads_weekly | 26,298 | - |
| content.faq | `[{"answer":"A framework that processes real-time streams and batch data at scale, enabling stateful computations with low latency and high throughput across distributed clusters. It is indexed under Data Engineering Tools.","source":"https://flink.apache.org","question":"What is Apache Flink?","confidence":0.6},{"answer":"Apache Flink 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://flink.apache.org","question":"Is Apache Flink free to use?","confidence":0.6},{"answer":"Apache Flink 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://flink.apache.org","question":"What platforms does Apache Flink support?","confidence":0.6},{"answer":"Yes. Apache Flink can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://flink.apache.org","question":"Can Apache Flink be self-hosted?","confidence":0.6},{"answer":"We have confirmed 17 integrations for Apache Flink, including Kafka, Cassandra, Elasticsearch, MongoDB, OpenSearch, RabbitMQ, Google Cloud Pub/Sub and Apache Pulsar, plus 9 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://flink.apache.org","question":"What does Apache Flink integrate with?","confidence":0.6},{"answer":"Yes. Apache Flink 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.","source":"https://github.com/apache/flink","question":"Is Apache Flink open source?","confidence":0.99}]` | `[{"answer":"Estuary unifies ETL and ELT pipelines with real-time CDC, streaming, and batch data movement in a single managed platform. Data stays in your environment while Estuary handles continuous capture, transformation, and delivery to any destination. It is indexed under Data Engineering Tools.","source":"https://estuary.dev/pricing/","question":"What is Estuary Flow?","confidence":0.6},{"answer":"Estuary Flow offers a free tier, so you can start without paying. Paid plans start at $0.50. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://estuary.dev/pricing/","question":"Is Estuary Flow free?","confidence":0.6},{"answer":"Estuary Flow supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://estuary.dev/pricing/","question":"What platforms does Estuary Flow support?","confidence":0.6},{"answer":"Yes. Estuary Flow can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://estuary.dev/pricing/","question":"Can Estuary Flow be self-hosted?","confidence":0.6},{"answer":"We have confirmed 28 integrations for Estuary Flow, including Oracle, MySQL, PostgreSQL, Amazon S3, Google Cloud Storage, Azure Blob Storage, NetSuite and HubSpot, plus 20 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://estuary.dev/pricing/","question":"What does Estuary Flow integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Estuary Flow. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Estuary Flow not holding them. Always confirm compliance directly before you rely on it.","source":"https://estuary.dev/pricing/","question":"What security certifications does Estuary Flow have?","confidence":0.6}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | A distributed processing engine and framework that handles both continuous data streams and bounded datasets using in-memory computation, designed to run at scale across cluster environments with state management and high throughput. | Estuary is a fully managed data integration platform that consolidates the capture, movement, and transformation of data across databases, cloud storage, and applications. It supports continuous streaming, scheduled batch operations, and optional transformations using SQL, TypeScript, or dbt. |
| features.capabilities | `{"cdc":true,"role":"engine","paradigm":"both","managed_cloud":true,"connector_count":"17+","self_hosted_oss":true,"incremental_runs":true,"distributed_executor":true}` | `{"cdc":true,"role":"elt","soc2":true,"paradigm":"both","dbt_native":true,"cdc_support":true,"elt_pushdown":true,"managed_cloud":true,"connector_count":"200+","self_hosted_oss":true,"incremental_runs":true,"reverse_etl_addon":true,"streaming_ingestion":true,"custom_connector_sdk":true,"distributed_executor":true,"schema_drift_handling":true,"self_hosted_available":true,"managed_cloud_available":true}` |
| integrations.count | 16 | 200 |
| integrations.list | `[{"name":"Kafka"},{"name":"Cassandra"},{"name":"Elasticsearch"},{"name":"MongoDB"},{"name":"OpenSearch"},{"name":"RabbitMQ"},{"name":"Google Cloud Pub/Sub"},{"name":"Apache Pulsar"},{"name":"JDBC"},{"name":"Apache HBase"},{"name":"Apache Hive"},{"name":"Amazon Kinesis"},{"name":"Amazon Firehose"},{"name":"Amazon DynamoDB"},{"name":"Apache Kudu"},{"name":"Prometheus"},{"name":"HTTP"},{"name":"AWS","native":true},{"name":"Google Cloud PubSub","native":true},{"name":"HBase","native":true},{"name":"Hive","native":true},{"name":"Kudu","native":true},{"name":"Pulsar","native":true},{"name":"YARN","native":true},{"name":"HDFS","native":true},{"name":"CDC","direction":"inbound"}]` | `[{"name":"Oracle"},{"name":"MySQL"},{"name":"PostgreSQL"},{"name":"Amazon S3"},{"name":"Google Cloud Storage"},{"name":"Azure Blob Storage"},{"name":"NetSuite"},{"name":"HubSpot"},{"name":"Salesforce"},{"name":"Google Pub/Sub"},{"name":"Amazon Kinesis"},{"name":"Apache Kafka"},{"name":"Snowflake"},{"name":"Google BigQuery"},{"name":"Amazon Redshift"},{"name":"Elasticsearch"},{"name":"MongoDB"},{"name":"Amazon DynamoDB"},{"name":"Pinecone"},{"name":"OpenAI"},{"name":"Databricks"},{"name":"Facebook Ads"},{"name":"LinkedIn Ads"},{"name":"Google Ads"},{"name":"SingleStore"},{"name":"Motherduck"},{"name":"Apache Iceberg"},{"name":"BigQuery","native":true,"category":"data_warehouse"},{"name":"Airbyte","native":false,"category":"connectors"}]` |
| language.primary | Java | - |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://flink.apache.org","retrievedAt":"2026-09-14T09:27:44.802Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"No cost, data-limited evaluation","features":["2 connector instances","10 GB/month data limit","Data stored in Estuary cloud storage"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Limited data volume with shared Estuary cloud storage","contactSales":false,"includedLimits":{"connector_instances":"2","data_volume_per_month":"10 GB"}},{"free":false,"name":"Cloud","summary":"$0.50/GB data moved + $100/month per connector (first 6), $50/month each additional","features":["Unlimited connector instances","Usage-based data pricing","Data stored in customer cloud account","Real-time CDC from databases","Batch and streaming data movement","SQL and TypeScript transformations","dbt integration for warehouse transformations","Schema evolution handling"],"components":[{"per":{"qty":1,"unit":"GB"},"kind":"metered","amount":0.5,"currency":"USD"},{"kind":"per_unit","unit":"connector_instance (first 6)","amount":100,"period":"month","currency":"USD"},{"kind":"per_unit","unit":"connector_instance (additional)","amount":50,"period":"month","currency":"USD"}],"description":"Usage-based pricing with data and connector instance charges; includes 30-day free trial","contactSales":false}],"summary":"Free tier with 10 GB/month limit. Cloud plan: $0.50/GB data moved plus connector instance fees.","currency":"USD","freeTier":true,"sourceUrl":"https://estuary.dev/pricing/","retrievedAt":"2026-09-18T15:55:37.792Z","freeTrialDays":30,"startingPrice":{"unit":"connector_instance (additional)","amount":50,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | freemium |
| pricing.price_level | free | mid |
| pricing.starting_price | - | `{"amount":50,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| reliability.sla_pct | - | 99.9 |
| reliability.status_page | - | yes |
| security.certifications | - | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"}]` |
| security.disclosure_policy | yes | - |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.scorecard | 5.7 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.flink%3Aflink-java&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (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) | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-17T13:36:55.676Z. "-" = undocumented, not absent.*