Blender - Blender is the open source, cross platform suite of tools for 3D creation.
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.
Ecdesign - Ecdesign.
InnoPlanner - InnoPlanner is a commercial based interior designing software.
autodecco - autodecco is the name of a highly advanced interior design software that is being backed by the advanced AutoCad technology to let the users to save their time and get more and more from this software.
SketchUp - 3D for Everyone