Free Software Tools
Clock analyzer is an EMC tool for predicting problematic harmonics of clock signals (Mac OS X).
Inter-plane capacitance in PCBs with sub-nano second risetimes is a design tool for estimating PCB power plane decoupling for very high-speed digital circuits (Mac OS X).
Radiation from a slot in a shield is an EMC tool for worst case estimation of the radiation from an aperture in a shield (Mac OS X).