PyPI · crates.io99Exceptionalhealth index

Qiskit/qiskitQiskit is an open-source SDK for working with quantum computers at the level of extended quantum circuits, operators, and primitives.
Python · Rust★ 7,753↓ 1.2M/moAug 28, 2026
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quantumlib/CirqPython framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.
Python★ 5,054↓ 796.3K/moAug 28, 2026
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PennyLaneAI/pennylanePennyLane is an open-source quantum software platform for quantum computing, quantum machine learning, and quantum chemistry. Create meaningful quantum algorithms, from inspiration to implementation.
Python★ 3,404Aug 13, 2026
PyPI98Exceptionalhealth index
Python★ 236↓ 617.6K/moAug 19, 2026
PyPI96Exceptionalhealth index
Python★ 373↓ 86.7K/moSep 11, 2026
crates.io · npm96Exceptionalhealth index

microsoft/qdkMicrosoft Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas
Rust · Python★ 1,005Sep 9, 2026
PyPI96Exceptionalhealth index

quantumlib/OpenFermionPython package for compiling and analyzing quantum algorithms to simulate electronic structures.
Python★ 1,734Sep 11, 2026
PyPI95Exceptionalhealth index
Python · Cython★ 2,057Aug 13, 2026
PyPI94Exceptionalhealth index
Python · Jupyter Notebook★ 62↓ 70K/moJul 29, 2026
PyPI · crates.io92Excellenthealth index
Rust★ 59↓ 128.1K/moAug 22, 2026
PyPI90Excellenthealth index

vprusso/toqito|toqito> (Theory of Quantum Information Toolkit) is a Python library for research in quantum information theory.
Python★ 290Sep 9, 2026
crates.io · PyPI89Excellenthealth index

Quantinuum/hugrHierarchical Unified Graph Representation for quantum and classical programs
Rust · Python★ 71↓ 131.8K/moSep 5, 2026
PyPI89Excellenthealth index
zxcalc/pyzxPython library for quantum circuit rewriting and optimisation using the ZX-calculus
OpenQASM · Jupyter Notebook · QuakeC★ 535Jul 24, 2026
PyPI88Excellenthealth index
Python · TeX★ 1,493↓ 450.3K/moJul 30, 2026
PyPI86Excellenthealth index
Python★ 61↓ 1,810/moSep 12, 2026
PyPI · crates.io · npm84Excellenthealth index
anulum/scpn-quantum-controlEvidence-governed quantum simulation of coupled-oscillator synchronisation — Kuramoto–XY workloads on Superconducting Computers, raw counts + hash-bound result packs, preregistered protocols.
Python★ 3↓ 156/moJul 23, 2026
crates.io83Excellenthealth index
Rust★ 9↓ 4,646/moSep 6, 2026
PyPI · crates.io81Excellenthealth index
Rust · Python★ 21↓ 39K/moJul 30, 2026
npm80Excellenthealth index
TypeScript★ 9↓ 8,476/moJul 27, 2026

tenax-lab/tenaxJAX-based tensor network library with label-based contraction and symmetry-aware block-sparse tensors
Python★ 8↓ 10K/moSep 11, 2026
Python · C++★ 42↓ 384/moSep 11, 2026

quantumlib/chromobiusOpen-source implementation of a Möbius decoder for color codes used in quantum error correction (QEC)
Python · C++★ 43↓ 16.2K/moSep 10, 2026
PyPI · crates.io75Goodhealth index
Rust · Python★ 15↓ 29K/moAug 15, 2026
PyPI · npm73Goodhealth index
Python · TypeScript★ 19↓ 389/moJul 27, 2026
crates.io71Goodhealth index
qiskit-community/rsgridsynthhigh-precision Rust-based synthesizer that decomposes single-qubit Z-axis rotations into Clifford+T gate sequences, using number-theoretic algorithms and geometry-of-numbers methods.
Rust★ 15↓ 20.7K/moJul 24, 2026
PyPI · npm · Go69Goodhealth index
Python · Go · TypeScript★ 1↓ 1,455/moSep 10, 2026
crates.io67Goodhealth index

RustCrypto/KEMsCollection of Key Encapsulation Mechanisms written in pure Rust
Rust★ 107↓ 2.2M/moAug 22, 2026
PyPI63Moderatehealth index

neuralsorcerer/qbalanceA workflow toolkit for balancing quantum compilation, suppression, and mitigation choices over a dataset of quantum circuits.
Python★ 3↓ 40/moSep 11, 2026
crates.io · PyPI63Moderatehealth index
Rust★ 3↓ 60.2K/moJul 25, 2026
PyPI62Moderatehealth index
TheQuantAI/quantsdkWrite quantum code once, run anywhere — a framework-agnostic quantum computing SDK
Python★ 0↓ 301/moJul 23, 2026