Estuary Flow
Why it matters

Self-serve streaming data platform for building real-time ETL from DB, SaaS and filestores. Company behind Gazette and Estuary Flow OSS.

Self-service platform and provider of open-source batch ELT data integration connectors.



Open-Source, or predictably priced pipelines at $.50/GB plus $0.14 / hr (~$100/mo) for any capture or materialization.

SaaS is based on credits

*$10 per gigabyte for DB

*$15 per million rows for APIs

Can also be run yourself using the open source.

Compare these for yourself.


<100ms. Only constraint is frequency of updates from the source, or what the destination can handle.

Minimum possible latency is 5 minutes.

Faster data leads to 2x better marketing outcomes (Gartner) and enables real-time ML and insights.


100+ connectors. Also HTTP file, webhook, and ability to spin up most new connectors within a week and even bring in Airbyte connectors.

340+ connectors. 50+ of which are GA. Also file-based ingestion and webhooks. Custom connector builder available.

Estuary develops fast and scalable real-time connectors. 

Airbyte connectors are community built enabling a large library of varying quality connectors.


Coming Winter 2023

Yes. OSS.

Airbyte can be a good choice for self hosted on-prem SaaS connectors.



At-least Once

At-least once semantics means duplicates can be created in the consumer, creating excess cost and incorrect stats needing de-duplication. 



ELT Only.

Transformations can prevent enable new workflows and save money by loading just the right data into your warehouse.

Schema Migrations

Automated Schema Evolution

Monitors for schema evolution every 24 hours and alerts users on changes. Modifications not propagated downstream

Automated schema updates makes it possible to keep an always consistent view in your warehouse.

Data Lake

Ingested data stored in a real-time data lake in customers cloud storage

Every new pipeline is made from scratch and begins with a new capture

By storing data in a real-time data lake, you can endlessly distribute off one ingest... saving you egress fees, API limits, credits, and source system stress.


Streaming SQL and javascript transforms with joins on both real-time and history data. DBT as a destination.

Transforms take place in your warehouse with DBT.

Joining data in flight can unlock new use cases and save you money.

Vector DBs & AI



Teams quickly demanding support for vector DBs

See how Estuary compares to others
About Estuary
Estuary is building the next generation of real-time data integration solutions.

We're creating a new kind of DataOps platform thatempowers data teams to build real-time,data-intensive pipelines and applications, at scale,with minimal friction, in a UI or CLI. We aim to make real-time data accessible to the analyst, while bringing power tooling to the streaming enthusiast. Flow unifies a team's databases, pub/sub systems, and SaaS around their data, without requiring new investments in infrastructure or development.

Estuary develops in the open to produce both the runtime for our managed service and an ecosystem ofopen-source connectors. You can read more about our story here.