Mayo the opensource 3D CAD viewer and converter ?? Overview 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 For more details have a look at this fine review Introducing Mayo by Libre Arts There's also a complete video on YouTube ? Features 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 the Home 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 from command-line interface ?? ?? Supported formats Format Import Export Notes STEP ? ? AP203, 214, 242 IGES ? ? v5.3 BREP ? ? OpenCascade format DXF ? ? OBJ ? ? glTF ? ? 1.0, 2.0 and GLB VRML ? ? v2.0 UTF8 STL ? ? ASCII/binary AMF ? ? v1.2 Text/ZIP(export) PLY ? ? ASCII/binary OFF ? ? 3MF ? ? 3DS ? ? FBX ? ? Collada ? ? X3D ? ? X(DirectX) ? ? Image ? ? PNG, JPEG, ... See also this dedicated wikipage for more details ?? 3D viewer operations Operation Mouse/Keyboard controls Rotate mouseLeft + move Pan mouseRight + move Zoom mouseLeft + mouseRight + move Zoom +/- mouseWheel(scroll) Window zoom CTRL + mouseLeft + move Instant zoom spaceBar Select Object mouseLeft click Select Objects SHIFT + mouseLeft clicks Mayo supports also multiple 3D viewer navigation styles to mimic common CAD applications(CATIA, SOLIDWORKS, ...) ?? Install Release packages are available for Windows and Linux on the Releases page. Alternatives for Windows: Winget winget install --id Fougue.Mayo Scoop scoop bucket add extras scoop install extras/mayo ?? How to build Instructions for Windows Instructions for Linux Instructions for macOS ?? Gallery 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
