Homebyme - Homebyme is an online design planning tool that allows you to create a 3D model of your home, which you can then add furniture and design elements to. Read more about Homebyme.
FreeCAD - An open-source parametric 3D modeler
Tantify - Tantify is a one of a kind virtual staging platform that helps people create their dream home.
SketchUp - 3D for Everyone
Archilogic - Turn floor plans into 3D virtual tours
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.