Quantum computing is a computing paradigm that uses quantum-mechanical phenomena, such as superposition and entanglement, to perform computations. Quantum computing has the potential to solve complex problems that are currently intractable for classical computers. Popular quantum computing platforms include IBM Quantum, Google Quantum, and Microsoft Quantum. See our portfolio An operating system (OS) is a software system that manages computer hardware and software resources and provides common services for computer programs. Examples of operating systems include Windows, macOS, and Linux.