DDask developers (open-source community) · Distributed & parallel computing
Python library for parallel and distributed computing that scales pandas, NumPy and custom task graphs from a laptop to a cluster
BSD-3-ClauseOpen sourceFreeLocalSelf-hostedNov 2, 2026 Ppandas development team (NumFOCUS) · DataFrames & array computing
In-depth entry The standard Python DataFrame library for labeled tabular data, time series and I/O to CSV, Excel, SQL, Parquet and more
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