Homogenizer++: a platform for upscaling multiphase flows in heterogeneous porous media We develop a user-friendly computational tool, Homogenizer++, for the computation of effective parameters. The platform Homogenizer++ is based on object-oriented programming approach. It includes modules to compute effective permeability, effective capillary pressures and relative permeabilities, macrodiffusion in solute transport, and simple code for computing solutions for flows in porous media.