| as2 | Time Stamp Project Grid Information |
| as3a | ActivInspire Resource Pack |
| as4 | AskSam Database Backup |
| as4 | Clone Manager Scan Results Data |
| as4 | SurfSaver Data |
| as4a | ActivInspire Resource Pack |
| asa | Microsoft Visual InterDev Data |
| asab | OpenRC Temporary Output Data |
| asas | ANSYS ASAS Input File |
| asat | TurboCAD Assemble SAT 3D Model |
| asb | Alphacam Stone VB Macro |
| asc | Apophysis Script |
| asc | Atari Jaguar Sound Patch |
| asc | Atlantis Word Processor Spellchecker Data |
| asc | Autodesk 3D Studio Scene in ASCII |
| asc | LTspice Circuit Schematic Data |
| asc | Neuroscan 3D ASCII Data |
| asc | Shimadzu LabSolutions ASCII Spectral Data |
| asc | SOBEK RTC Communication Data |
| asce | ASCE Data |
| asd | Ableton Warp Analysis File |
| asd | ASD TerraSpec Data |
| asdb | Active-HDL Accelerated Waveform Data |
| asdf | Advanced Scientific Data Format |
| ase | Alice Scene Export Data |
| asep | Separator for Mac Data |
| asf | Active-HDL State Diagram |
| asf | ANALECT FT-IR Data |
| asf | Statgraphics Data |
| asgl | ASGL Data |
| ash | ActivTrak Session Track History Data |
| ash | Nintendo Wii System Menu Data |
| ashlang | Ashampoo Media Player Language Data |
| asi | Miles Sound System Data |
| asice | DigiDoc BDOC Digital Signature |
