Sweet Home 3D is a interior design application that helps you place your furniture on a house 2D plan, with a 3D preview. There are many interior design software applications available on the market. I’ll present one of them to you now. Sweet Home 3D is the perfect tool to help you place furniture in your house. If you want to redecorate an apartment or rearrange the existing furniture in a room, Sweet Home 3D might prove to be the easiest way.