autocad topic
libopencad
OpenSource library under X/MIT license to work with CAD files (DWG/DXF). Please use repository linked below, this one is abandoned.
speckle-sharp
.NET SDK, Schema and Connectors: Revit, Rhino, Grasshopper, Dynamo, ETABS, AutoCAD, Civil3D & more.
AutoCADCodePack
AutoCAD Code Pack: A powerful library that helps you to develop AutoCAD plugins using the AutoCAD .NET API
Grevit
Grevit - Build your BIM Model in Grasshopper or SketchUp
odooplm
Go to website for more information !!
ACadSharp
C# library to read/write cad files like dxf/dwg.
design.automation-custom-data-viewer
DWG custom data viewer: End to end sample that demonstrates extracting custom data from DWG files interacting with it in the Viewer
dxf2tbl2svg
convert AutoCAD DXF file to tables and subsequently to SVG