BIM-Sim computes the interactions between an incident electromagnetic field and spherical scatterers using Mie theory. A Windows 32 executable is provided in the Win32 directory. All of the necessary runtime libraries are included. Start by running 'ricalc -h' for command-line options. This software is designed to be used with CMake, so we recommend using it to build the application. This software requires the following libraries for compiling: CUDA (including CUFFT and CUBLAS) - NVidia's GPU programming toolkit -- https://developer.nvidia.com/ RTS - Real-Time Scraps C++ library (my codebase) -- https://github.com/dmayerich/RTS Boost C++ Library (specifically the Program Options library) -- http://www.boost.org/ Qt (Nokia's GUI Library) -- https://qt-project.org/