DWG TrueView: Free application for viewing and plotting DWG and DXF files.
Irregular "free-form" shapes can be modeled using the mesh tool.
Quickly easily batch convert PLT files to AutoCAD DWG/DXF.
Application that extends AutoCAD, BricsCAD and ZWCAD.
This program lets the users create NURBS surfaces from the OBJ polygon mesh.
