FreeCAD - An open-source parametric 3D modeler

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.

VARKON - Varkon is a very powerful parametric 2D/3D CAD, modeling and application development tool for...

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.

ArCADia-Architecture - ArCADia-Architecture is a revolutionary component for the instant creation of architectural documentation and object drawing.

SketchUp - 3D for Everyone