Mayo the opensource 3D CAD viewer and converter

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Convert 3D files
Mayo can read/write 3D files from/to STEP, IGES, STL and many other CAD formats

Visualize 3D files
Mayo 3D viewer supports clip planes, exploding of assemblies, measurement of shapes, show/hide parts, …

Cross platform
Mayo runs on Windows, Linux and macOS

Solid foundations
Mayo is developed in modern C++ with Qt and OpenCascade

https://github.com/fougue/mayo