Autodesk - DWG TrueView

Use the free* DWG TrueView™ CAD file conversion software to accurately view, plot, and publish authentic DWG™ and DWF™ files.

Take the capabilities of DWG TrueView to the next level by downloading your copy of Autodesk Design Review first. Autodesk Design Review is the free*, integrated, all-digital way to view, print, mark up, and compare versions of 2D and 3D drawings, maps, and models—without the original design-creation software.

到官方站点下载，也可以下载，不过您得花上一些小时间来注册。
http://download.autodesk.com/akdlm/esd/dlm/dwgtrueview/SetupDWGTrueView2010_32bit.exe