Estuary Flow vs Windmill
Estuary Flow and Windmill are both data integration & ETL tools aimed at developers. Both have a free plan.
Estuary Flow
Real-time ETL and CDC pipelines
Windmill
Open-source developer platform for scripts, flows and apps
| Pricing | Freemium | Open source · $10 |
| Starting price | Not published | $10/mo |
| Free plan | Yes | Yes |
| Free trial | 30 days | — |
| Built for | Developers | Developers |
| Platforms | web | web |
| Country | US · 2019 | FR · 2022 |
| Rating | — | — |
Choose Estuary Flow if
Teams needing real-time data pipelines.
- Low latency
- Cost-effective
- CDC done well
Look elsewhere if: Simple daily batch syncs.
Choose Windmill if
Developers wanting code-first automation.
- Very fast engine
- Code-first
- Open source
Look elsewhere if: No-code users.
Estuary Flow vs Windmill pricing
Estuary Flow
- Developer$0Up to 10 GB/mo, 2 connector instances
- Cloud$0.50/GBPlus $100/connector instance; usage-based
- EnterpriseCustomCustom volume and deployment model
Windmill
- Community Edition$0Self-hosted, unlimited executions, max 10 users with SSO
- Cloud Team$10/seat/moManaged cloud; per seat (from page structured data)
- Enterprise (self-hosted)from $120/mo$20/dev/mo + $50/worker/mo compute; audit logs, SAML
- Enterprise (cloud)CustomBased on seats and compute units
Estuary Flow · Key features
- Real-time CDC
- Streaming and batch
- Transformations
- 200+ connectors
- Exactly-once delivery
- Private deployments
Cons
- Smaller connector catalog than Fivetran
- Streaming concepts
- Younger vendor
Windmill · Key features
- Scripts to workflows
- Schedules and triggers
- Auto-generated UIs
- App builder
- Multi-language
- Self-hosting
Cons
- Developer-oriented
- Smaller community
- Learning curve
Estuary Flow vs Windmill: FAQ
Do Estuary Flow and Windmill have a free plan?
Yes, both Estuary Flow and Windmill have a free plan; paid plans add more usage and features.