I have used Roomarranger in the past.
A feature I would like to see in SweetHome3d: Layers.
You shoudl be able to place things on specific layers: I create a layer windows -> I can place all windows on this layer. Same with furniture. The pros: I can enable or disable the view of layers. The cons: None?
Olaf
[Note: this thread was started on sourceforge.net forums]