| 3mxb | ContextCapture Binary 3MX Data |
| 3o | Advent 3B2 Object Graphic |
| 3o3 | STABCAL 3A3 Data |
| 3o5 | STABCAL 3A3 Data |
| 3ox | 3Shape Order Exchange Format Data |
| 3oxz | 3Shape Order Exchange Format Data |
| 3p | Advent 3B2 Document Preferences |
| 3pe | Intuit TurboTax 2008 Form Data |
| 3pi | ShapeGrabber 3D Scanner Data |
| 3r | Advent 3B2 Raster Image |
| 3rf | Arbortext Advanced Print Publisher Cross Reference Data |
| 3s | Advent 3B2 Paragraph Styles |
| 3sc | Bemio Scattering Data |
| 3sm | ContextCapture Scalable Mesh |
| 3t | Advent 3B2 Text |
| 3tf | ThreeDGraphics PGSDK Template Data |
| 3th | 3D Movie Maker Thumbnail Data |
| 3ws | CityEngine Web Scene |
| 3x | Advent 3B2 Document Entity |
| 3x5 | 3x5 Knowledge Base Data |
| 477 | MNS Shape Definition Companion Data |
| 48g | EMU48 Rom Image |
| 49g | EMU48 Rom Image |
| 4a3 | STABCAL Data |
| 4b3 | STABCAL Data |
| 4br | 4D Backup Description Data |
| 4c3 | STABCAL 4C3 Data |
| 4cm | ClickMouse Macro Set |
| 4d | 4DIM Model Data |
| 4db | 4D Database Structure Data |
| 4dc | 4D Database Compiled Structure |
| 4dd | 4D Database Data File |
| 4det | 4D Database for Mac Label Editor Data |
| 4df | 4D Database Search Document |
| 4dg | 4th Down Football Scout Game Data |
