Based on the Finite Difference Time Domain (FDTD), Remcom’s XFdtd Release 7.0 multi-purpose EM simulation software comes with a cross-platform user interface. The full-wave 3-D EM solver offers parameterization sweeps including a scripting capability, and meshing for complex objects. The software allows for editing of imported CAD files, modeling, and scripting that enables functionalities including macros and customization. The product has fast meshing algorithm, mesh preview before calculation, and acceleration via computer clusters or GPU hardware. Applications include microwave, RF, antennas, scattering, biological EM (MRI and handheld devices), photonics, packaging, EMC, and electromagnetic behavior of specialized materials.