Open source etl projects
Every project in the registry tagged etl, ranked by real GitHub adoption.
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Declarative workflow orchestration for data, AI, and infra
Collect, transform, and route logs and metrics in one tool
Open-source data integration for modern teams
An orchestration platform for the development, production, and observation of data assets.
Ultra-fast data transformation for AI with lineage
Magical data pipeline tool for seamless transformations
Zero-ETL, infinite possibilities. Live query APIs, code & more with SQL. No DB required.
Flink CDC is a streaming data integration tool
A system for agentic LLM-powered data processing and ETL
pandas on AWS - Easy integration with Athena, Glue, Redshift, Timestream, Neptune, OpenSearch, QuickSight, Chime, CloudWatchLogs, DynamoDB, EMR, SecretManager,
Scalable and efficient data transformation framework - backwards compatible with dbt.
Fast, Simple and a cost effective tool to replicate data from Postgres to Data Warehouses, Queues and Storage
Apache DevLake is an open-source dev data platform to ingest, analyze, and visualize the fragmented data from DevOps tools, extracting insights for engineering
Real-time stream processing made simple and affordable
A lightweight stream processing library for Go
🔥🔥🔥 Open source Reverse ETL - alternative to hightouch and census.
Database Reporting Tool and Tasks (.Net)
A Python stream processing engine modeled after Yahoo! Pipes
Open-source ETL/ELT you deploy on your own servers or cloud. Built on DuckDB: no-code/low-code visual pipelines or SQL, 385 components, dbt, CDC, data quality,
The open document intelligence platform for builders and hackers - DMS for the agentic world
Hop Orchestration Platform
Actively maintained fork of Alibaba DataX — a fast, versatile ETL tool for RDBMS/NoSQL data transfer
Postgres, MySQL, or MariaDB to Elasticsearch/OpenSearch sync
TypeScript ETL toolkit for indexing Ethereum, Solana, and Substrate data, sourced from SQD Network.
Sling is a CLI tool that extracts data from a source storage/database and loads it in a target storage/database.
Workflow Automation Engine
Mass processing data with a complete ETL for .net developers
Conduit streams data between data stores. Kafka Connect replacement. No JVM required.
The Public Utility Data Liberation Project provides analysis-ready energy system data to climate advocates, researchers, policymakers, and journalists.
Beginner data engineering project - batch edition
Yet another redundant workflow engine
🍁 Sycamore is an LLM-powered search and analytics platform for unstructured data.
A free to use dbt package for creating and loading Data Vault 2.0 compliant Data Warehouses (powered by dbt, an open source data engineering tool, registered t
A simplified, lightweight ETL Framework based on Apache Spark
ReplicaDB is open source tool for database replication, designed for efficiently transferring bulk data between relational and non-relational databases
Connect APIs, databases, and streams without glue code
Related tags
Frequently asked questions
How many open source etl projects are there?
This registry tracks 37 projects tagged etl, with 218,108 GitHub stars between them. The most-adopted is airflow at 47,350 stars.
Are these etl projects free to use?
Yes — 35 of the 37 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which etl project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these etl projects still maintained?
31 of the 37 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.