This is a powerful tool that easily converts pdf files into dwf and dxf files.
A Windows utility for converting DWF files to DWG format.
Any DGN to DWG Converter batch converts DGN files to AutoCAD DWG/DXF files.
OverCAD Block Manager x64 is a powerful block manager tool of AutoCAD.
The Block Manager software is an easy AutoCAD utility.