By Alejandro Romero
ProGrids is a Unity extension that allows for placing objects systematically via grid snapping.
https://www.procore3d.com/progrids/
Allows projection of grids in X, Y, or Z axes
Set units between gridlines
Project 3D grids
Toggle snapping
Snap all object in scene
Works great with
Open Unity. If you do not have Unity installed, see the Unity3D wiki page
Go to Window > Package Manager and make sure All-packages is selected in the dropdown in the top left of the Package Manager window
Simply look up ProGrids and hit install on the bottom right
In the Editor, go to Tools > ProGrids > ProGrids Window
This will open the ProGrids window! Its functionality is outlined in the main Features section above