[GIS] Free Alternative to AutoCAD Map

autocadautocad-mapfree softwareopen-source-gis

I would like to know if there are any free (for commercial use) software packages that roughly correlate to the functionality in AutoCAD Map. Specifically, I am looking for something that is:

  • Commandline based.
  • Opens .dwg and possibly .dgn files.
  • Can generate world files for raster
    georeferencing.
  • Optional: Civil 3d functionality such
    as alignment and profile generation.
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