EMASPro is an electromagnetic modeling software package for modeling of antenna radiation wave propagatio. The two core parts in this software suit include: Hybrid surface-volume integral equation (VSIE) and the multilevel fast multiple algorithm (MLFMA). The VSIE approach allows the modeling of three dimensional complex structures with perfectly conducting (PEC) material, electric and magnetic material. The application of MLFMA ensures the solution efficiency, so that it can be applied to solve many realistic engineering problems.