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ARX File - What is an .arx file and how do I open it?
Learn about .ARX files and view a list of programs that open them.
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What is an ARX file? Extension file created for AutoCAD, a design and engineering application for 2D and 3D products; contains an application component written using Autodesk's ObjectARX, an object-oriented API that allows developers to customize and extend AutoCAD using C++, C#, and VB.NET program code.
More Information ObjectARX SDKs are released with each version of AutoCAD, so you need to match the SDK version with the appropriate AutoCAD version.
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.ARX File Extension
AutoCAD Runtime Extension File
| Developer | Autodesk |
| Popularity |
3.3 | 11 Votes |
What is an ARX file?
Extension file created for AutoCAD, a design and engineering application for 2D and 3D products; contains an application component written using Autodesk's ObjectARX, an object-oriented API that allows developers to customize and extend AutoCAD using C++, C#, and VB.NET program code.
More Information
ObjectARX SDKs are released with each version of AutoCAD, so you need to match the SDK version with the appropriate AutoCAD version.
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Programs that open or reference ARX files
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Autodesk AutoCAD 2025
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Autodesk ObjectARX SDK
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Category: Plugin Files
Updated: September 7, 2010