Quantum Computing GitHub Repositories (2026) · Open Source Tools

Qiskit is an open-source SDK for working with quantum computers at the level of extended quantum circuits, operators, and primitives.

Microsoft Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

Library for pulse-level/analog control of neutral atom devices. Emulator with QuTiP.

PennyLane is an open-source quantum software platform for quantum computing, quantum machine learning, and quantum chemistry. Create meaningful quantum algorithms, from inspiration to implementation.

A JIT compiler for hybrid quantum programs in PennyLane

The Qiskit ecosystem is a collection of tools created by researchers and developers who use Qiskit every day.

A hardware-agnostic SDK for optimization problems: define a problem once, then lower it to any quantum or classical solver

Modern C++ quantum computing library

Silq quantum programming language type checker, compiler, and experimental interpreter.

Example notebooks that show how to apply quantum computing with Amazon Braket.

Variational Quantum Circuit Simulator for Quantum Computation Research

Tiny post-quantum encryption for sensitive data. Write-only by design. ML-KEM-768 + X25519 + AES-256-GCM. Please break it.

A toolkit for applying error mitigation techniques on most quantum computers.

Design automation software tools for Topological Quantum Error Correction

Source code for the TKET quantum compiler, Python bindings and utilities

Pythonic quantum-classical programming language

Source code for the book "Quantum Computing for Programmers", Cambridge University Press

measurement-based quantum computing (MBQC) library

A programming model for leveraging quantum and classical resources

Sample-based Quantum Diagonalization: Classically postprocess noisy quantum samples to yield more accurate eigenvalue estimations.