Blender - Blender is the open source, cross platform suite of tools for 3D creation.
FreeCAD - An open-source parametric 3D modeler
Ecdesign - Ecdesign.
SketchUp - 3D for Everyone
autodecco - autodecco is the name of a highly advanced interior design software that is being backed by the advanced AutoCad technology to let the users to save their time and get more and more from this software.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.