I'm happy to announce that the first version of the ElectroMagnetic Workbench for the FastFieldSolvers free tools is available!
At present, the Workbench fully supports the FastHenry magnetoquasistatic impedance solver (i.e. inductance and resistance calculation of 3D structures). Needless to say, FastHenry is Open Source and imposes no limitations on the models it can handle (besides your computing resources).
The topic has already been discussed in the FreeCAD forum under FEM, see https://forum.freecadweb.org/viewtopic.php?f=18&t=31920
The Wiki documentation is fully available as well under https://www.freecadweb.org/wiki/EM_Workbench
Direct link to Git repository is https://github.com/ediloren/EM-Workbench-for-FreeCAD
Hope you will enjoy!