This book offers the latest in the parallel solution of integral equations for both in-core and out-of-core modes. User-friendly computer code is provided, with a strong and unique capability for solving challenging electromagnetic field problems consisting of complex material structures. The content also provides parallel programming techniques that make MoM (Method of Moments) a useful software and more accessible to antenna and microwave designers who need a fast simulation tool. This code both supports classroom education and helps practicing engineers develop new versatile products.