4 tools
Apache Software Foundation · Data catalogs & formats
Language-independent columnar in-memory format and libraries that let DuckDB, Polars, pandas, Spark and databases exchange tables without copying
DuckDB Foundation / DuckDB Labs · Analytical engines & OLAP
In-process analytical SQL database that queries Parquet, CSV and Arrow data directly from Python, R, Node or the CLI
GeoPandas developers (NumFOCUS affiliated) · GIS & mapping
Python library extending pandas with geometry columns, spatial operations, reprojection, spatial joins and file I/O for vector geodata
Polars (Ritchie Vink and contributors) · DataFrames & array computing
Rust-based DataFrame library with Python, Rust, Node and R bindings offering lazy query optimization, multithreading and Arrow-native memory
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