SIMATIC WinCC is described as 'Supervisory control and data acquisition (SCADA) and human-machine interface (HMI) system from Siemens. SCADA systems are used to monitor and control physical processes involved in industry and infrastructure on a large scale and over long distances' and is an app. There are three alternatives to SIMATIC WinCC for a variety of platforms, including Windows, Linux, Web-based, Android and iPhone apps. The best SIMATIC WinCC alternative is DataPortia, which is free. Other great apps like SIMATIC WinCC are Constellation DAQ and QuickHMI.