Top Open Source ETL & Data Integration Tools in 2026
A curated collection of the 8 best free and open-source ETL & Data Integration tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Mage
Open-source data pipeline orchestrator for analytics and AI
Stars8,814Last commit24d agoLicenseApache-2.0CloudQuery
Unified cloud ops control plane for governance and automation
Stars6,497Last commit10d agoLicenseMPL-2.0Kestra
YAML-based orchestration platform with 1400+ plugins for running data pipelines, AI workflows, and infrastructure automation across teams at scale.
Stars27,933Last commit10d agoLicenseApache-2.0
Jitsu
Open-source customer data platform for real-time event streaming
Stars5,045Last commit11d agoLicenseMIT
Impler
Open source CSV Excel importer for SaaS
Stars290Last commit2mo agoLicenseMITLogstash
Open source log collection and processing pipeline
Stars14,927Last commit11d agoLicenseOpen Source
CocoIndex
Incremental data framework for AI agents
Stars11,413Last commit11d agoLicenseApache-2.0
Airbyte
Open-source data integration for AI agents
Stars21,963Last commit11d agoLicenseOpen Source
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Showing 8 of 8 open-source tools