thank you muchrcwilson said:We use Easy Power - www.easypower.com
It does good fault calculations, coordination studies and can be used for arc flash analysis.
We tried others (Etap, EDSA, Capper/Dapper) but found the more powerful programs were also harder to learn and more complicated to use.
There are some free programs from manufactuers like Cutler-Hammer that may work for commercial building applications.