A few sites that offer online room planning in 3D are Roomstyler and RoomSketcher. Roomstyler allows 3D planning with more customization features, while RoomSketcher allows less customization with a more life-like experience of the room design.
Rooms designed on Roomstyler are drawn or rendered from an image of an actual room. Additional elements within the room can also be customized with rendered images. For example, the view from a window can be rendered into the room plan to reflect the actual view. Users who already use its sister site, Floorplanner, to draw their floorplans can import those drawings directly in Roomstyler.
RoomSketcher similarly allows 3D room planning but with some restrictions. Rooms can be drawn but cannot be rendered from actual images. Also, users can't create customized window views on this site. Individuals who are less proficient at drawing and those who wish to skip the sketching themselves can pay to have their floorplans drawn in 2D or 3D by the company. An attractive feature of Roomstyler is that users can take a 3D walk-through of the space. Individuals can tour a property, "walk" from one room to another and make 360 turns the way they normally would. Additionally, this live viewing is available on both the Web-based and mobile platforms.