Sweet Home 3D 4.1

Sweet Home 3D is a free, easy to learn 3D modeling program with a few simple tools to let you create 3D models of houses, sheds, home additions and even space ships. The program allows you to  place your furniture on a house 2D plan, with a 3D preview. Apart from being a very useful interior design application, it's also a hell of a lot of fun, allowing you to mix and match furniture with ease.

The home and interior design program offers more than 50 different pieces of furniture, ranging from beds to lamps and desk table. In order to create your rooms smoothly, all you need to do is drag and drop elements into the grid view. To make further efforts, the latest version adds a new level of realism which includes a new ability to handle rounded walls. You can create walls of desired dimensions and directions, use textures for your walls, hang paintings on them and much more.