Browse free open source Quantum Computing software and projects for Windows below. Use the toggles on the left to filter open source Quantum Computing software by OS, license, language, programming language, and project status.
The fundamental package for scientific computing with Python
Qiskit is an open-source SDK for working with quantum computers
Azure Quantum Development Kit
Quantum software platform that is optimized across the quantum stack
Quantum assembly language for extended quantum circuits
An open source framework for programming photonic quantum computers
A High-Level Abstraction Framework for Quantum Algorithms
NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20
NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20
NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20
Cagliari-Orsay model for anharmonic molecular spectra in 2nd order PT
Berkeley Quantum Synthesis Toolkit
C++ and Python support for the CUDA Quantum programming model
Accelerated libraries for quantum-classical computing built on CUDA-Q
A python framework for creating, editing, and invoking NISQ
Time Travel is possible
NOTICE OF CONSOLIDATION & PARTNERSHIP PENDING As of April 2026, the 20
Numerical routines for variational matrix product state simulations.
Mitiq is an open source toolkit for implementing error mitigation
Analyze output of NBO computations