DuckDB
DuckDB is an open source, in-process analytical SQL database designed for fast analytical queries directly on local files including Parquet, CSV, and JSON, as well as data frames in Python and R. It requires no server installation and is widely used in data science, data engineering, and analytics workflows as a fast alternative to heavy data warehouse setups.
🔗 https://duckdb.org/ | GitHub: https://github.com/duckdb/duckdb