Civil Designer - Civil Designer is a comprehensive one stop civil infrastructure design package which incorporates a very powerful CAD platform and eight configurable modules.
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.
LumenRT - LumenRT offers combination of tools to rapidly create photographic images and ultra-high definition videos of the projects.
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.
RoomSketcher - RoomSketcher - Visualizing Homes
SketchUp - 3D for Everyone