Bentley View 8.1

Bentley View is a free DGN viewer, DWG viewer, and i-model viewer. It's a tool for projects that require a powerful viewing, measuring, and printing application for MicroStation, AutoCAD, or hybrid projects using i-models.

With an installed user base in the millions, Bentley View is one of the most widely used free CAD viewers in the world.
Bentley View provides high performance environment to open design files of all types, including DGN, DWG, DXF, raster, or a hybrid. Bentley View works across file format versions too, so whether your DWG files are in the R11 format, AutoCAD 2008, or something in between, Bentley View opens them all.