View AutoCAD drawings with this free DWG/DXF/DWF viewer. The program is a small application wrapped around an ActiveX component. This allows it to run as a Windows application and in your browser. The ActiveX control requires Internet Explorer 4.x or above and Windows NT/98/2000/XP. You can modify and compile the control for inclusion in your own application. Features include a simple user interface, zoom-all/window, pan, rotate, layering.