CST MICROWAVE STUDIO is described as '(CST MWS) is a specialist tool for the 3D EM simulation of high frequency components. The unparalleled performance of CST MWS makes it the first choice in technology leading R&D departments'. There are three alternatives to CST MICROWAVE STUDIO for Windows, Linux and Mac. The best alternative is ANSYS HFSS. It's not free, so if you're looking for a free alternative, you could try Vorpal.
Reducing design costs and development times is an ever-increasing challenge. FARADAY, a 3D time-harmonic eddy current field solver from Integrated Engineering Software gives you the advantage you need to meet this challenge head on.