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Mayo the opensource 3D CAD viewer and converter

• Convert 3D files
  Mayo can read/write 3D files from/to STEP, IGES, STL and many otherCAD 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++ withQt andOpenCascade

For more details have a look at this fine reviewIntroducing Mayo by Libre Arts
There's also a completevideo on YouTube

• 3D clip planes with configurable capping

• 3D exploding of the model tree allowing better exploration of complex designs

• 3D measure tools for circles, angles, lengths, areas, bounding box, ...

• 3D view cube providing intuitive camera manipulation

• Quick access to CAD files recently open thanks to thumbnails in theHome page

• Toggle item visibility within the Model tree(use checkbox)

• Customizable mesh precision for BREP shapes, affecting visualization quality and conversion into mesh formats

• Convert files to multiple CAD formats fromcommand-line interface💻

See also this dedicatedwikipage for more details

Mayo supports also multiple 3D viewer navigation styles to mimic common CAD applications(CATIA, SOLIDWORKS, ...)

Release packages are available for Windows and Linux on theReleases page.

Alternatives for Windows:

• Winget

winget install --id Fougue.Mayo

• Scoop

scoop bucket add extrasscoop install extras/mayo

Instructions for Windows
Instructions for Linux
Instructions for macOS

Easy to use command-line utility for batch conversion of CAD files

Import of glTF file with textures

Import of STEP file with many parts

Import of PLY file defining point cloud

Options dialog with import/export configuration per CAD format

Home page with quick access to recent files