The JTOpen file reader supports 3D JT data format developed by Siemens PLM Software (formerly UGS Corp.).
| Type | Category | Feature | Supported? |
| Geometry | Geometry 1 (B-Rep Geometry) | Solid | Yes |
| Surface | Yes | ||
| Wire | Yes | ||
| Point | Yes | ||
| Curve | Yes | ||
| Conical | Yes | ||
| Planar | Yes | ||
| Cylindrical | Yes | ||
| Spherical | Yes | ||
| Toroidal | Yes | ||
| Nurbs | Yes | ||
| Workfeature | Yes | ||
| Coordinate System | Yes | ||
| Hierarchy | Hierarchy 1 (Part/Assembly) | Part | Yes |
| Assembly | Yes | ||
| Properties | Color Properties | Face Color | Yes |
| Body Color | Yes | ||
| Part Color | Yes | ||
| Instance Color | No | ||
| Wire/Point Color | No | ||
| Material/Texture | Face | No | |
| Body | No | ||
| Part | Yes | ||
| Instance | No | ||
| Override | No | ||
| Visibility | Body Visibility | No | |
| Instance Visibility | No | ||
| Override Visibility | No | ||
| Standard Properties | Yes | ||
| Customizing Properties | Yes | Naming | Body/Part Name | Yes |
| Instance/Document Name | Yes | ||
| Mesh | Yes | ||
| Others | Unit | Length Unit | Yes |
| Angle Unit | Yes | ||
| Mass Unit | Yes | ||
| Customizing Unit | Yes | ||
| Unicode | Yes | ||
| Light | Yes | ||
| File Extensions | *.JT | Yes | |
| Specialty | Primitives/Scale | Yes | |
| JT Locator (CSYS) | Yes, by extension data | ||
| Subnode | Yes | ||
| Lightweight Body | Yes, by extension data | ||
| Text | No | ||
| Axis System | Coordinate System | Yes | |
| Camera/View | Yes |