Sweet Home 3D is a free tool for interior design, which helps you place furniture in your new house and decorate any part, testing along the way. The program works on 2D plans but offers you a 3D preview once finished.
Sweet Home 3D includes up to 50 objects and pieces of furniture, although you can also import new ones. To do this just look regularly at the webpage, which is often updated.
Sweet Home 3D lets you print and export your designs with a simple Cut and Paste operation. It also includes a complete help if you have any problem using it. It requires Java Runtime Environment in your PC to work correctly.