| .3dc |
RacerMate 3D Course File |
| .123 |
Lotus 1-2-3 Spreadsheet |
| .3dl |
iGO Landmark File |
| .123d |
Autodesk 123D Drawing |
| .123dx |
123D Design Model File |
| .3w |
XYZprinting Sliced Model File |
| .2d |
VersaCAD 2D Drawing File |
| .123c |
Autodesk 123C Drawing |
| .adt |
ACT! Document Template |
| .att |
Web Form Post Data File |
| .asc |
PGP ASCII Armored File |
| .asy |
Asymptote Module |
| .a2l |
ASAP2 ECU Description File |
| .art |
ArtCAM Model |
| .asm |
Assembly Language Source Code File |
| .act |
ADPCM Compressed Audio File |
| .ard |
ArtiosCAD Workspace File |
| .adi |
AOMEI Backupper Disk Backup File |
| .afd |
Alphacam Flame Drawing |
| .any |
AnyRail Layout Plan |
| .afs |
STAAD.foundation Project File |
| .bcd |
Windows Boot Configuration Data File |
| .brd |
EAGLE Circuit Board File |
| .bdl |
CoCreate Bundle File |