Is DuckDB free and open source?

Yes. DuckDB is free and open source, released under the MIT license. You can view and contribute to the source at https://github.com/duckdb/duckdb.

What language is DuckDB written in?

DuckDB is primarily written in C++.

Other open-source data & databases tools on OSSDrop include Apache Superset, Chart.js, Apache ECharts, scikit-learn.

Curated

In-process analytical SQL database; runs OLAP queries inside your app or notebook.

Data & Databases·MIT·C++·40.9k stars·v1.5.5·added 2026-07-10

Curated listing — added by OSSDrop, not the maker.

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What is DuckDB?
DuckDB is an open-source data & databases tool — In-process analytical SQL database; runs OLAP queries inside your app or notebook. It is written in C++.
Is DuckDB free and open source?
Yes. DuckDB is free and open source, released under the MIT license. You can view and contribute to the source at https://github.com/duckdb/duckdb.
What language is DuckDB written in?
DuckDB is primarily written in C++.
What are open-source alternatives to DuckDB?
Other open-source data & databases tools on OSSDrop include Apache Superset, Chart.js, Apache ECharts, scikit-learn.

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