LOW ![]() | ![]() | |
| Name | STEP | HOOPS Stream Format |
| File extension | .stp, .step | .hsf |
| Original software | ||
| Binary | ■ | ■ |
| ASCII | ■ | |
| Polygonal | ■ | |
| NURBS | ■ | |
| Solids | ||
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | |
| Developer/Owner | ISO | Tech Soft 3D |
| Description | ||
| Specification | Download PDF | Open HSF doc |
| Format features | The basic format of the transfer surfaces between CAD-systems. See also IGES | One attempt to create « universal » 3D-format for publishing CAD-models. To date, work on improving it stopped |
| Viewing software | Delcam Exchange 2012 (free), eDrawings (free) | Hoops Publish |