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| Name | ACIS SAT Model File | Universal 3D File |
| File extension | .sat, .sab, .asat, .asab | .u3d |
| Original software | ||
| Binary | ■ | ■ |
| ASCII | ■ | |
| Polygonal | ■ | |
| NURBS | ■ | |
| Solids | ■ | |
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | |
| Developer/Owner | Spatial | 3D Industry Forum, Ecma International |
| Description | ||
| Specification | Download PDF | Universal 3D File Format |
| Format features | File geometric kernel ACIS. Is used by CAD-systems such as AutoCAD, Inventor | Attempt to create a universal format for the exchange of 3D-data, including for publishing on the Internet. One of the successors of obsolete format WRL (VRML) |
| Viewing software | RADF Viewer (free), Delcam Exchange 2012 (free) | GLC_Player (free), MeshLab (free) |