Surface Code Python Packages

pymatching

PyMatching: A Python/C++ library for decoding quantum error correcting codes with minimum-weight perfect matching.

tesseract-decoder

Search-based decoder for quantum error correction (QEC) written in C++ and Python.

beliefmatching

An implementation of the belief-matching decoder

tqec

Design automation software tools for Topological Quantum Error Correction

qector-decoder-v3

Production-grade Rust/Python quantum error correction decoder. 25+ decoder families: MWPM Blossom, Union-Find, BP-OSD, LDPC/qLDPC, belief-matching, CUDA/GPU batch decoding, AutoDecoder 7-tier fallback. PyMatching/Stim/Sinter compatible. Ed25519 license verification. Benchmark evidence included.

aegis-qec

Aegis QEC — Open-source quantum error correction for surface codes: Stim/PyMatching MWPM decoding, noise simulation, benchmarking, and reproducible research.

panqec

Simulation and visualization of quantum error correcting codes

bloq-py

Dynamic Clifford+T surface code compiler

qsurface

✅ Python package for simulation and visualization of quantum error-correction on surface codes. The package provides the ability to inspect the error-correcting code during the decoding process, and tools to benchmark the decoder.

localuf

A Python package to simulate and visualise Union-Find-related decoders for the surface and repetition codes.

qtcodes

Qiskit Topological Codes