XFlow CFD is described as 'XFlow is a next generation CFD software system that uses a proprietary state-of-the-art Lattice Boltzmann technology, and is specifically designed for companies which require accurate feedback on flow simulation, transient aerodynamics, water management and fluid-structure' and is an app. There are more than 10 alternatives to XFlow CFD for Windows, Linux, Mac, Web-based and MATLAB. The best XFlow CFD alternative is COMSOL Multiphysics. It's not free, so if you're looking for a free alternative, you could try FEATool Multiphysics or Code_Aster. Other great apps like XFlow CFD are SimFlow, Code_Saturne, ANSYS Fluent and COSMOSWorks.