AAApache Software Foundation · Data catalogs & formats
In-depth entry Language-independent columnar in-memory format and libraries that let DuckDB, Polars, pandas, Spark and databases exchange tables without copying
Apache-2.0Open sourceFreeLocalNov 2, 2026 GGeoPandas developers (NumFOCUS affiliated) · GIS & mapping
In-depth entry Python library extending pandas with geometry columns, spatial operations, reprojection, spatial joins and file I/O for vector geodata
BSD-3-ClauseOpen sourceFreeLocalNov 2, 2026 PPolars (Ritchie Vink and contributors) · DataFrames & array computing
In-depth entry Rust-based DataFrame library with Python, Rust, Node and R bindings offering lazy query optimization, multithreading and Arrow-native memory
MITOpen sourceFreeLocalNov 2, 2026