DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
Floorplanner - Floor plan interior design software. Design your house, home, room, apartment, kitchen, bathroom, bedroom, office or classroom online for free or sell real estate better with interactive 2D and 3D floorplans.
AutoCAD MEP - AutoCAD MEP software helps you draft, design, and document building systems.
Sweet Home 3D - Sweet Home 3D is a free interior design application that helps to draw the plan of house, arrange furniture on it and visit the results in 3D.
AutoCAD Plant 3D - AutoCAD Plant 3D is a BIM software that lets you create, modify, and manage schematic piping and instrumentation diagrams.
SketchUp - 3D for Everyone