Every once and a while I recommend certain Revit apps that I feel add value and are essential to everyday Revit users. Coins Auto-Section box and ReviBOX are must have addins for every Revit user. I can't really use Revit without these. Coins Auto-Section Box give users a quick and easy way to model in a specific 3D view. ReviBOX takes modeling to the next level by offering the ability to create temporary section views in 3D views on the fly! The combination of these two apps makes 3D modeling headache free and very easy to use. Both are must have apps and are available in autodesk exchange!
