Source: http://feeds.gawker.com/~r/lifehacker/full/~3/plljSOfqNhQ/floorplanner-presents-your-plans-in-3d
We originally reviewed Floorplanner in 2007, but since then they've introduced some helpful new features. We originally dug it because of the easy drag-and-drop interface and the extensive library of furniture, fixtures, plants and more are still there. One of the principle reader complaints back then was the lack of 3D planning, but you can now plan in both 2D and 3D, switching between the views for a long view of proportion and layout. The free demo on their site doesn't allow you to save, but does give you a feel for the tools and layout—though you might be tempted to sign up, after a little Sims-style rearrangement. Or, you know, they put that PrtSc key on up there on your keyboard for a reason.
Floorplanner has a free and premium tier; the limitation on the free plan is one house or apartment floor plan. If you upgrade to Floorplanner PLUS for $27.50 a year, you can create up to five home plans.