The name is very self-explaining. Their website looks nice and professional. I am yet to explore FreeCAD. If I think right, this one could replace AutoCAD for 2D and 3D drawing. Their website does not talk much about 2D other than a mention where they say that FreeCAD has the ability to convert 2D drawings into 3D.
Let us see how useful it is. 😇
They have a PPA for Ubuntu.
AutoDesk products are not free, but they are good and are industry standard.