KRATOS Multiphysics is described as 'Kratos Multiphysics (A.K.A Kratos) is a framework for building parallel multi-disciplinary simulation software. Modularity, extensibility and HPC are the main objectives. Kratos has BSD license and is written in C++ with extensive Python interface' and is an app in the development category. There are more than 10 alternatives to KRATOS Multiphysics for Windows, Linux, Mac and MATLAB. The best KRATOS Multiphysics alternative is COMSOL Multiphysics. It's not free, so if you're looking for a free alternative, you could try FEATool Multiphysics or Elmer. Other great apps like KRATOS Multiphysics are Calculix, OpenFOAM, SimFlow and CFDTool.