1. A computer-implemented method comprising: a) defining and storing, through a computer-implemented user interface, one or more attributes of a source resonator and a device resonator forming a wireless energy transfer system; b) defining and storing, through the user interface, information about an interaction between the source resonator and the device resonator; c) modeling, one or more electronic processors, an electromagnetic performance of the wireless energy transfer system to derive one or more modeled values based on the received one or more attributes of the source and device resonator; d) generating, using the one or more electronic processors, a design of an impedance matching network based on the derived one or more modeled values; and e) using the one or more electronic processors to provide, through the user interface, a visual representation of information about the modeled electromagnetic performance of the wireless energy transfer system and the generated design of the impedance matching network.