Downloadable computer software for data and source code processing in the field of quantum qubit-based computing and hybrid quantum-classical computing; downloadable computer software for constructing, analyzing and running quantum qubit-based programs and algorithms and quantum-classical programs and algorithms; downloadable application programming interface (API) software for use in quantum qubit-based computing and hybrid quantum-classical computing, including programming and developing and testing quantum qubit-based algorithms and hybrid quantum-classical algorithms; downloadable computer software for developing and testing quantum qubit-based algorithms and hybrid quantum-classical algorithms; downloadable computer software for solving quantum qubit-based and hybrid quantum-classical algorithms, simulation of quantum qubit-based and hybrid quantum-classical processes, quantum qubit-based and hybrid quantum-classical machine learning, quantum qubit-based and hybrid quantum-classical analytics, and solving quantum qubit-based and hybrid quantum-classical mathematical problems; downloadable computer software for acquiring, analyzing, processing, storing, or providing quantum qubit-level information and hybrid quantum-classical information; downloadable computer software for developing and deploying quantum and hybrid quantum-classical web applications; computer software for quantum and hybrid quantum-classical coding; interactive computer software for quantum and hybrid quantum-classical coding; personal computer application software for quantum and hybrid quantum-classical coding; Downloadable computer software featuring an runtime for developing, deploying and managing quantum and hybrid quantum-classical microservices