I did up a version in Excel, based on the original design but modified to add some things I wanted/needed (more slots for feats/abilities, e.g.). I did a sheet for animal companions, one for spells/powers, and one for special items, though the base character fits on one sheet (front/back). I mainly did it for the autocalc function, because it's a lot faster (fewer numbers to fill in) and less chance of mistakes.