SolidWorks eDrawings - SolidWorks offers complete 3D software tools that are easy to learn and use, and work together to help you design products better.
Morpholio Trace - Morpholio Trace is widely called to be the dream software of the designers and architect.
SketchUp - 3D for Everyone
Qlone - 3D scan any object with your iPhone or iPad
ActCAD - ActCAD is one Software for many applications covering the primary domains of – Architecture, Engineering, Construction (AEC) including Structural, Electrical, and Mechanical.
DWG FastView - DWG FastView for Windows is a lightweight dwg/dxf drawing viewer and editor produced by Gstarsoft, no need of dwg format conversion, vector graph magnified without distortion and full compatible with AutoCAD DWG/DXF.