Airbyte is an open-source data integration system that supports more than 300 structured and unstructured data sources. It's got features like a Connector Builder for custom connectors, automatic schema changes and support for big security standards. That makes it a good option for data engineers, AI engineers and analytics teams, and it can be run in a variety of configurations from cloud-hosted to entirely self-managed.
Another strong contender is Fivetran, which offers automated data integration from more than 500 sources. It can be run in a variety of configurations, including fully-managed SaaS and self-hosted options, so you can integrate data securely in on-premise, cloud and hybrid environments. Fivetran also offers real-time analytics and support for several standards, which makes it a good choice for complex data integration and analysis.
Stitch is a cloud-based ETL service that lets you get data from more than 140 sources into a cloud data warehouse with no programming required. It offers fully automated cloud data pipelines and supports sources like Salesforce and Google Analytics. It's a good option for teams that want to simplify their data integration and get to fresh data as fast as possible.