| Abbreviation | Definition |
|---|---|
| ASC | GROB Graphic Object Bitmap graphics Black and White ASCII ( HP-48sx calculator) |
| ASCX | Active Server Control Extension |
| ASD | Astound Presentation file |
| ASD | Auto Recovery Save of Document |
| ASD | Auto Recovery Save of Word Document |
| ASD | Lotus 1-2-3 Screen Driver |
| ASD | Word for Windows AutoSave file |
| ASF | Advanced Streaming Format Video |
| ASF | Lotus 1-2-3 Screen font |
| ASF | STATGRAPHICS Datafile |
| ASH | Assembly language header file (TASM 3.0) |
| ASI | Assembler Include file |
| ASIC | ASIC language source code file |
| ASM | Assembly language source code file |
| ASMX | Active Server Methods |
| ASO | Assembler Object (object-oriented) file |
| ASO | Astound Dynamite Objects |
| ASP | Aspect language script file (Procomm Plus) |
| ASP | Association of Shareware Professionals note |
| ASPX | .NET Active Server Page |