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.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Planner 5D - Home Design Software & Interior Design Tool ONLINE for home & floor plans in 2D & 3D. Read more about Planner 5D.
roomeon - Roomeon is simply a best in the class interior designing and decorating software that offers the 3D based designing features and functions to its users.
SketchUp - 3D for Everyone
InnoPlanner - InnoPlanner is a commercial based interior designing software.