Ecdesign - Ecdesign.
Design Manager - Design Manager is an interior designing software that is designed by the leading project management and architecture groups of the world.
Studio Designer - Studio Designer is totally different from the traditional designing and home decorating programs.
Opun Planner - Opun Planner is a free and web based design planner for all kind of interior designing requirements.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.