Sweet Home 3D is described as 'Free Java-based interior design tool for drawing house plans, arranging furniture, and viewing results in 3D with open-source flexibility' and is a very popular Interior Design app in the home & family category. There are more than 50 alternatives to Sweet Home 3D for a variety of platforms, including Windows, Web-based, Mac, iPad and iPhone apps. The best Sweet Home 3D alternative is SketchUp. It's not free, so if you're looking for a free alternative, you could try Planner 5D or Blophome. Other great apps like Sweet Home 3D are Floorplanner, Ashampoo 3D CAD Professional, Live Home 3D and Autodesk Revit.