DWG Diff 188.8.131.52
Compares all drawing entities in the selected drawing space (Model,Layout)
Compares all other drawing structures such as: Layers, Blocks, Text Styles, Layouts, etc.
Compare dwg drawings from R12 to 2007.
Creates three separate views outputs (A not B, B not A, and Common).
Comparative output can be saved as dwg, dxf, pdf.