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- Because of the suboptimal quality of the [[DXF Reference]] not all DXF viewers, creators or processors are of equal quality. I consider a CAD application as a reliable CAD application when the application creates valid DXF documents in the meaning and interpretation of [[Autodesk]] and a reliable DXF viewer when the result matches in most parts the result of the free [[DWG Trueview]] viewer provided by [[Autodesk]].
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- These are some applications which do fit the criteria of a reliable CAD application:
- [[AutoCAD]] and [[DWG Trueview]]
- CAD applications based on the [[Open Design Alliance]] (ODA) SDK, even [[Autodesk]] is a corporate member, see their blog post from [22 Sep 2020](https://adsknews.autodesk.com/news/open-design-alliance-membership) at [adsknews](https://adsknews.autodesk.com/) but only to use the ODA IFC tools and not to improve the DWG/DXF compatibility
- [[BricsCAD]] - [[ODA]] based
- [[GstarCAD]] - [[ODA]] based
- [[ZWCAD]] - [[ODA]] based
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- Unfortunately, I cannot recommend any open source applications because everyone I know has serious shortcomings, at least as a [[DXF]] viewer, and I don’t trust them as a DXF creator either.
- Please do not submit bug reports based on the use of [[LibreCAD]] or [[QCAD]], these applications are in no way reliable regarding the [[DXF]] format and I will not waste my time on them.
- To be clear, not even [[ezdxf]] (which is not a CAD application) is a reliable library in this sense - it just keeps getting better, but is far from reliable.
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