But if you have Revit.. you also have Autocad (architecture) because it is in the same AEC building collection- so ZWCAD is only interesting for people who don't use any Autodesk product.

Looks like a skinned BricsCAD? We switched over from Autocad recently. Personally Briscad is so much faster and lighter than Autocad, and cheaper! With hexagon behind them they're developing more and more at a rapid pace

Looks like a copy of AutoCAD....