FreeCAD is really intriguing to me. The bummer is that it’s designed around metric. My work place is inch based and most of my tools and stock at home are inch based also. I remember in heekscad they made an inch conversion keeping the underlying metric. I’m not sure that was the best approach. I’ve run into situations where converting toleranced dimension from metric to inch would do some weird things.
Anyway, It seems like there was quite a bit work done on trying have imperial units, but it doesn’t seem to be a focus at this point.