fasthenry, fastcap, fastlap

• Original link  (28 Nov 2008, offline)

PyMeepPlasmonics

Free and open-source code package designed to perform PyMEEP FDTD simulations applied to Plasmonics.

• Link (4 May 2023)

OpenSEMBA is an open-soruce repository of codes for solving electromagnetic problems. It includes solvers based on FDTD, DGTD, MTLN, FEM and generate meshers.

• Link (28 Aug 2025)

IrisFDTD

IrisFDTD-Academic is a Fortran implementation of the Finite-Difference Time-Domain (FDTD) method. IrisFDTD-Academic is a "toy version" of the IrisFDTD program.

• Link (3 May 2023)

oiseau is a specialized Discontinuous Galerkin Time-Domain (DGTD) framework designed for advanced simulation of electromagnetic and wave propagation problems.

• Link (28 Aug 2025)

MESTI  (Maxwell's Equations Solver with Thousands of Inputs)

MESTI is an open-source software for full-wave electromagnetic simulations in frequency domain using finite-difference discretization on the Yee lattice.

• Link (2 May 2023)

MaxwellFDFD is a MATLAB-based package that solves the frequency-domain Maxwell's equation.

• Link (25 Aug 2025)

FDTD++

FDTD++ is advanced, fully featured finite-difference time-domain (FDTD) software, with included C++ source code and a number of features not found in any other software.

• Link (28 March 2019)

FDTD.jl

An implementation of the Finite Difference Time Domain (FDTD) method in 2D and 3D for Electromagnetic Simulation in Julia.

• Link (4 May 2023)

2D FDTD Mini Simulation

• Link (8 Aug 2017)