Despite the progress, open-source quantum computing faces hurdles:
License: BSD-3-Clause C++17 framework for analyzing, transforming, and optimizing OpenQASM 2.0 circuits. free open source quantum computer solutions
: 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 Free Cloud Access to Real Quantum Hardware :
: Designed specifically for Noisy Intermediate-Scale Quantum (NISQ) devices, Cirq allows developers to create, simulate, and optimize quantum circuits for near-term processors. Cirq allows developers to create
| 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 |
License: Apache 2.0 Dedicated to continuous-variable quantum computing (photonic hardware).
(by Quantinuum, formerly Cambridge Quantum) License: CERN-OH-S-2.0 (strongly reciprocal open source) State-of-the-art compiler for circuit optimization and hardware mapping.