These codes are non-commercial. TLM Program , an implementation of the TLM method from the University of Victoria's TLM Modeling Group. This code is non-commercial. Michael I. Mishchenko's T-matrix codes for computing 3D scattering by rotationally symmetric dielectric particles in fixed and random orientations. These codes are non-commercial.
Software is commercial, but freeware for students.
This code is non-commercial. TCE , a finite-element package.