STP Viewer - Free STP Viewer - free software that lets you view 3D STEP files (.stp, .step file format).
eDrawings Viewer - View, print, and review all types of eDrawings files Built-in Viewer
A360 VIEWER - Free online CAD Viewer
Vesalius3D - Vesalius3D is a toolkit for visualization of patient specific anatomy
DXF View - A lightning-fast drawing viewer enables you to view DXF and DWG™ files on Mac
Materialise Mimics - Materialise Mimics is software specially developed by Materialise for medical image processing.