SketchUp - 3D for Everyone
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
ZWCAD - ZWCAD software, as a highly reliable and powerful CAD tool, meets the needs of 2D/3D design &...
Sweet Home 3D - Sweet Home 3D is a free interior design application that helps to draw the plan of house, arrange furniture on it and visit the results in 3D.
GstarCAD - GstarCAD is an affordable, cost-effective, DWG-compatible CAD software covering a wide range of industry from architecture, mechanical, interior design, construction to engineering.
Assetforge - Asset Forge allows anyone to create 3D models and 2D sprites using building blocks.