SketchUp - 3D for Everyone
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.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
DreamPlan - DreamPlan Home Design software makes it easy to plan a new house or remodeling project. 3D interior, exterior and landscape design for your home! Free download.
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.
Assetforge - Asset Forge allows anyone to create 3D models and 2D sprites using building blocks.