Open source elt projects
Every project in the registry tagged elt, ranked by real GitHub adoption.
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Open-source data integration for modern teams
dbt enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications.
SeaTunnel is a multimodal, high-performance, distributed, massive data integration tool.
Magical data pipeline tool for seamless transformations
Sync and transform data from any source to any destination
Flink CDC is a streaming data integration tool
data load tool (dlt) is an open source Python library that makes data loading easy 🛠️
A system for agentic LLM-powered data processing and ETL
Scalable and efficient data transformation framework - backwards compatible with dbt.
Open-source BI for engineers
OLake - Fastest Databases, Kafka & S3 Replication to Apache Iceberg with Table optimization (Called OLake Fusion). ⚡ Efficient, quick and scalable data ingestio
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,
Sling is a CLI tool that extracts data from a source storage/database and loads it in a target storage/database.
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
ReplicaDB is open source tool for database replication, designed for efficiently transferring bulk data between relational and non-relational databases
Related tags
Frequently asked questions
How many open source elt projects are there?
This registry tracks 16 projects tagged elt, with 136,542 GitHub stars between them. The most-adopted is airflow at 47,350 stars.
Are these elt projects free to use?
Yes — 15 of the 16 carry an explicit open-source licence across 4 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 elt 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 elt projects still maintained?
15 of the 16 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.