//top\\ Free Open Source Quantum Computer Solutions Jun 2026

Hello Cirq. Cirq is an open source Python framework for quantum programming developed by a team at Google. Cirq can be used to run... IonQ Quantum Computing Applications | Real Commercial Use Cases ... Quantum computers today are primarily used for complex optimization, simulation and research. They are used to solve sampling prob... D-Wave Quantum Qiskit Consider Qiskit, a free and open-source quantum computing framework. Qiskit, created by IBM, allows users to create quantum comput... Qiskit IBM Quantum Platform IBM's quantum platform stands as perhaps the most established free quantum training resource. The IBM Quantum Experience provides ... IBM Quantum Platform GitHub The program was coded in C++ using the Qt framework. It is free and open source (under the GNU General Public License), all the so... GitHub Cirq Cirq is a framework for Noisy Intermediate Scale Quantum (NISQ) computers, developed by Google. This is also free and open source ... Cirq IBM IBM says it's the “world's most widely used open-source quantum programming software,” with new features to help computational sci... IBM QuTiP QuTiP, the Quantum Toolbox in Python ( Python programming language ) [ 1, 2] , has been at the forefront of open-source quantum so... QuTiP Microsoft Microsoft is one of the top three language players in the Quantum space where it supports the open source language Q#. Other open- Microsoft D-Wave Quantum And in early January, news arrived that D-Wave, arguably the world's best known quantum computing pioneer, is open-sourcing quantu... D-Wave Quantum

: This library is the industry standard for quantum machine learning (QML). PennyLane allows users to differentiate through quantum circuits, much like neural networks in classical AI.

License: BSD-3-Clause Header-only C++11 library. free open source quantum computer solutions

License: BSD-3-Clause Intermediate representation standard.

The "layer cake" of quantum computing usually consists of a high-level user interface, a compiler, and a backend (hardware or simulator). The following frameworks dominate the open-source landscape. Hello Cirq

: Microsoft offers Q# , a high-level, open-source programming language tailored for quantum algorithms. It integrates with Azure Quantum, which provides resource estimation tools to help researchers plan for future fault-tolerant systems. Free Cloud Access to Real Quantum Hardware

License: Apache 2.0 The most popular Python-based SDK. Includes: IonQ Quantum Computing Applications | Real Commercial Use

| Goal | Best FOSS Tool | |------|----------------| | Learn quantum programming | Qiskit or Cirq | | Simulate many qubits (~30-40) | QuEST (C) / Qiskit Aer (Python) | | Quantum machine learning | PennyLane | | Compile for real hardware | tket | | Simulate error correction | Stim | | Quantum chemistry | OpenFermion + Qiskit |