# Estuary Flow vs Meltano

**Leader by Vioscale score:** Estuary Flow

| Attribute | Estuary Flow | Meltano |
|---|---|---|
| **Vioscale score** | 80.4 (71% (medium)) | 53.7 (41% (low)) |
| activity.commits_last_30d | - | 61 |
| adoption.dependent_repos | - | 42 |
| adoption.github_stars | - | 2,609 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | 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. | Meltano provides a code-first approach to data integration, offering 600+ pre-built connectors with compute-time pricing and integrated governance. It enables teams to combine data extraction, loading, and transformation workflows with native dbt support and orchestration capabilities. |
| features.capabilities | `{"cdc":true,"role":"elt","paradigm":"both","managed_cloud":true,"connector_count":"200+","self_hosted_oss":true,"incremental_runs":true,"distributed_executor":true}` | `{"cdc":true,"role":"elt","paradigm":"both","dbt_native":true,"elt_pushdown":true,"managed_cloud":true,"connector_count":"600+","self_hosted_oss":true,"incremental_runs":true}` |
| integrations.count | 200 | 8 |
| integrations.list | `[{"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":"Singer"},{"name":"dbt"},{"name":"Airflow"},{"name":"PostgreSQL"},{"name":"Snowflake"},{"name":"Great Expectations"},{"name":"Dagster"},{"name":"Superset"}]` |
| language.primary | - | Python |
| license.spdx | - | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"cli":true,"web":true,"linux":true}` |
| pricing | `{"type":"usage","plans":[{"free":true,"name":"Developer Free","summary":"Free forever up to 10GB/month","features":["Access to Cloud Plan features","10GB/month data limit","2 concurrent connectors","Cloud deployment"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Launch your first pipelines for free","contactSales":false,"includedLimits":{"data_moved":"10GB/month","concurrent_connectors":"2"}},{"free":false,"name":"Cloud","summary":"$0.50/GB + $100/connector, billed monthly","features":["200+ fully-managed connectors","Unlimited users","Millisecond latency or batch","Role-based access control (RBAC)","Bring your own cloud storage","US/EU data processing regions","SSH tunnel support","UI and CLI management","Standard support via community Slack and email","dbt Cloud integration","Kafka compatibility","Real-time monitoring and alerting","50% discount on 6+ connectors"],"components":[{"per":{"qty":1,"unit":"gb"},"kind":"metered","amount":0.5,"currency":"USD"},{"kind":"per_unit","unit":"connector","amount":100,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Enterprise","summary":"Custom pricing with volume discounts","features":["All Cloud features","Volume-based discounts","SOC 2 & HIPAA compliance reports","Single sign-on (SSO)","Custom SLA terms","Private and BYOC deployments","Provisioned servers","Custom region support","Private networking (PrivateLink, Google Service Connect)","Performance customization/tuning","Dedicated support via Slack and email","Migration assistance","IAM and advanced authentication","Custom connector development"],"description":"Scaled Pricing","contactSales":true}],"summary":"Usage-based: $0.50/GB + $100/connector/month. Free tier: 10GB/month.","currency":"USD","freeTier":true,"sourceUrl":"https://estuary.dev","retrievedAt":"2026-08-03T14:24:35.648Z","freeTrialDays":30,"startingPrice":{"amount":0.5,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"hybrid","plans":[{"free":false,"name":"Starter","features":["200 compute hours/mo","Managed infrastructure","25 workspaces","Unlimited users","600+ connectors","Reverse ETL included","AI Data engineer agent","Direct access to Meltano Engineers via Slack","Enterprise security","Best in class SLA"],"commitment":"monthly","description":"Get your first managed pipelines running in hours, not weeks","contactSales":false,"includedLimits":{"users":"unlimited","connectors":"600+","workspaces":"25","compute_hours":"200/mo"}},{"free":false,"name":"Growth","features":["2000 compute hours/mo","Everything in Starter","100 workspaces","8 hours of engineering on demand/mo","Shared account management"],"commitment":"monthly","description":"Scale pipelines with real engineering support baked in","contactSales":false,"includedLimits":{"connectors":"600+","workspaces":"100","compute_hours":"2000/mo"}},{"free":false,"name":"Scale","features":["5000 compute hours/mo","Everything in Growth","Unlimited workspaces","15 hours of engineering on demand/mo","Dedicated account management","Cost monitoring workspace included"],"commitment":"monthly","description":"Dedicated support. Full platform access. Nothing held back.","contactSales":false,"includedLimits":{"connectors":"600+","workspaces":"unlimited","compute_hours":"5000/mo"}},{"free":false,"name":"Enterprise","features":["Unlimited compute hours/mo","Everything in Scale","Custom connectors","Custom hours of engineering on demand/mo","Custom SLA"],"commitment":"monthly","description":"Truly custom. For organisations with serious data at scale.","contactSales":true,"includedLimits":{"connectors":"600+","compute_hours":"unlimited"}}],"summary":"Free open-source version. Managed cloud plans from Starter (200 compute hrs/mo) to Enterprise (unlimited). Pay for compute, not rows.","currency":"USD","freeTier":true,"sourceUrl":"https://meltano.com","retrievedAt":"2026-08-03T14:26:46.478Z","billingPeriods":["month"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | low |
| pricing.transparent | yes | no |
| release.cadence_days | - | 3 |
| release.history | - | `[{"url":"https://github.com/meltano/meltano/releases/tag/v4.2.2","date":"2026-07-22T15:52:24Z","type":"stable","version":"v4.2.2"},{"url":"https://github.com/meltano/meltano/releases/tag/v3.9.5","date":"2026-07-22T15:23:55Z","type":"stable","version":"v3.9.5"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.2.1","date":"2026-06-16T22:28:01Z","type":"stable","version":"v4.2.1"},{"url":"https://github.com/meltano/meltano/releases/tag/v3.9.4","date":"2026-06-16T22:27:42Z","type":"stable","version":"v3.9.4"},{"url":"https://github.com/meltano/meltano/releases/tag/v3.9.3","date":"2026-04-13T20:41:28Z","type":"stable","version":"v3.9.3"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.2.0","date":"2026-04-10T23:16:25Z","type":"stable","version":"v4.2.0"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.1.2","date":"2026-02-03T03:20:00Z","type":"stable","version":"v4.1.2"},{"url":"https://github.com/meltano/meltano/releases/tag/v3.9.2","date":"2026-02-03T13:39:09Z","type":"stable","version":"v3.9.2"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.1.1","date":"2026-01-31T18:19:50Z","type":"stable","version":"v4.1.1"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.1.0","date":"2026-01-30T23:39:39Z","type":"stable","version":"v4.1.0"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.9","date":"2026-01-19T19:14:48Z","type":"stable","version":"v4.0.9"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.8","date":"2025-12-17T19:50:30Z","type":"stable","version":"v4.0.8"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.7","date":"2025-12-09T02:51:42Z","type":"stable","version":"v4.0.7"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.6","date":"2025-11-20T00:02:42Z","type":"stable","version":"v4.0.6"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.5","date":"2025-11-04T15:26:22Z","type":"stable","version":"v4.0.5"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.4","date":"2025-10-31T17:09:54Z","type":"stable","version":"v4.0.4"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.3","date":"2025-10-30T22:13:48Z","type":"stable","version":"v4.0.3"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.2","date":"2025-10-29T01:52:30Z","type":"stable","version":"v4.0.2"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.1","date":"2025-10-23T21:35:01Z","type":"stable","version":"v4.0.1"},{"url":"https://github.com/meltano/meltano/releases/tag/v4.0.0","date":"2025-10-23T18:08:27Z","type":"stable","version":"v4.0.0"}]` |
| reliability.sla_pct | 99.9 | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | - | yes |
| security.gdpr | yes | yes |
| security.hipaa | yes | - |
| security.soc2 | yes | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=meltano&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Data Engineering Tools)

| Capability | Estuary Flow | Meltano |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | ELT / ingestion | ELT / ingestion |
| Processing paradigm | Batch + streaming | Batch + streaming |
| **Connectivity** |  |  |
| Connector count | 200+ | 600+ |
| 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: Vioscale. Generated 2026-09-01T17:04:02.499Z. "-" = undocumented, not absent.*