SimWorks is described as 'Free CFD software built upon established open-source simulation tools integrated into an intuitive GUI. It supports the entire CFD simulation process: CAD import, pre-processing, meshing, running and fully integrated post-processing' and is an app. There are more than 10 alternatives to SimWorks for Windows, Linux, Mac, Web-based and MATLAB. The best SimWorks alternative is COMSOL Multiphysics. It's not free, so if you're looking for a free alternative, you could try FEATool Multiphysics or OpenFOAM. Other great apps like SimWorks are SimScale, KRATOS Multiphysics, ANSYS Fluent and CFDTool.