Duckle

Open-source ETL/ELT stack on DuckDB — write, wire, or draw one pipeline

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An open-source, single-engine ELT stack compiled to SQL on DuckDB, Duckle lets teams build pipelines in Python, wire them from many connectors, draw flows on a canvas, or describe pipelines to an on-device assistant, with transforms, data quality checks, and lineage carried with the same pipeline artifact. It targets data and analytics engineers who need to run pipelines locally or on their own infrastructure to avoid per-row pricing and vendor lock-in, including fully offline use.

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