Best Open-source ETL & Data Integration tools

CloudQuery

High-performance ELT framework powered by Apache Arrow

Apache SeaTunnel

Multimodal distributed data integration for massive-scale synchronization

Airbyte

Data integration platform for ELT pipelines from any source

Artie Transfer

Real-time CDC replication from OLTP to OLAP databases

OLake

Blazing-fast database replication to Apache Iceberg tables

CocoIndex

Ultra-performant data transformation framework for AI pipelines

Apache Spark

Fast, unified engine for large-scale data analytics

Meltano

Declarative code-first data integration engine for modern pipelines

Mara Pipelines

Lightweight Python ETL framework with PostgreSQL and web UI