Entropy Coding Python Packages

constriction

Entropy coders for research and production in Python and Rust.

bigsmall

Lossless AI model compression - ~34% smaller with bit-identical weights; the autopilot profiles your machine, picks the highest fidelity that runs, and streams models bigger than your RAM.

rgclib

Python wrapper for the C implementation of Recursive Group Coding (RGC)

datacortex

The best standalone JSON/NDJSON compressor. Beats zstd and brotli on every file.

py-rans

A lightweight rANSCoder meant for rapid prototyping.

ansnp

A Python package with C++ extensions using pybind11 developed by Zhihao Duan

yaecl

YAECL: Yet Another Entropy Coding Library for Neural Compression Research, with Arithmetic Coding and Asymmetric Numeral Systems support