ArchiCAD - ArchiCAD 16 enables BIM modeling with a new green approach to planning. Create anything you need with ArchiCAD's flexible new features for design.
Autodesk DWG TrueView - Get a free DWG viewer to view, open, edit, and convert .dwg files, the native file format for AutoCAD files. DWG Trueview includes DWG TrueConvert.
ARCHLine.XP - BIM / CAD Software for 3D Architectural and Interior Design
Autodesk Design Review - Design Review lets you view, mark up, print, and track changes to 2D and 3D files.
Microsoft 3D Builder - View, capture, personalize, and print 3D models.
ZWCAD Viewer - Cross-Platform .DWG | .DXF | .DWT R12-2013 Viewer