| 1. | .dw2 | Drawing (DesignCAD for windows) |
| 2. | .dwb | Workbench (Coryphaeus Software Designer) |
| 3. | .dwc | Compressed file archive (DWC) |
| 4. | .dwd | Sound (DiamondWare Digitized audio) |
| 5. | .dwf | Vector graphics (Drawing Web Format) (CAD programs) |
| 6. | .dwg | Vector graphics (AutoCAD - Drafix) (many CAD programs) |
| 7. | .dwp | Document file (DeScribe) |
| 8. | .dws | Workspace file (Dyadic) |
| 9. | .dwt | Template file, or prototype (AutoCAD) |