Version 3.6 of the GEMS software from 2COMU is a low-cost, three-dimensional electromagnetic (EM) simulator designed for fast processing speeds on networks and cluster computer systems. In addition to purchasing the software, a user gains access to the computing resources of the software manufacturer. The software allows an operator to use their own personal computer (PC) as a cluster using the 2COMU network system for additional processing power. The software is well suited for a wide range of designs, including antenna and antenna arrays, microwave circuits and components, radar cross section (RCS) analysis, signal integrity studies, thermal analysis, and materials analysis.