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| Name | Rhino OpenNURBS | GL Transmission Format |
| File extension | .3dm | .gltf, .glb |
| Original software | Rhinoceros 3D | |
| Binary | ■ | ■ |
| ASCII | ■ | |
| Polygonal | ■ | ■ |
| NURBS | ■ | |
| Solids | ■ | |
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | ■ |
| Developer/Owner | Robert McNeel & Associates | Khronos Group |
| Description | ||
| Specification | OpenNURBS | |
| Format features | The format of the first NURBS-Modeling software for Windows. Is currently open, so there are converters from/to lots of formats | Supports 3D model geometry, appearance, scene graph hierarchy, and animation. A .gltf file may be self-contained or may reference external binary and texture resources, while a .glb file is entirely self-contained |
| Viewing software | Deep View (free) | Paint 3D, MS Office etc |