Just a quick update on the Revit Add-ins, I’ve made an add-in named: Tag By Filter and Angle Validation. Tag By Filter does exactly what you would expect: Tag elements per view which meet specific filter rules. These rules filter by element parameters and can be combined together. The Angle Validation plugin lets users check if all elements, mainly walls, are parallel or orthogonal to the grid. Both add-ins are small, fast and will save the designers a lot of time and will improve the quality of their Revit model.