| afmacros | Affinity Photo Macro Data |
| afo | Advanced File Organizer Catalog Data |
| afo | Altair FEKO ADAPTFEKO Frequency Results Data |
| afp | Alphacam Flame Post Data |
| afp | FileProtector Encrypted Data |
| afpk | Audfprint Audio Fingerprint Peaks Data |
| afploc | Mac OS X Finder AFP Location |
| afpp | Mac Apple Share Prep Data |
| afpt | Audfprint Audio Fingerprint Data |
| afr | Arachni Framework Report |
| afs | Adobe Type Manager Font Set |
| afs | AktivFilter Specification Application |
| afs | STAAD Foundation Project |
| aft | Ancestry.com Family Tree Database |
| afu | NX Motion Simulation-RecurDyn Function |
| afw | iGrafx FlowCharter Workspace |
| afz | Ancestry.com Family Tree Database Backup |
| afzplug | Corel AfterShot Pro Plug-in |
| ag | Lotus Agenda Data |
| ag4 | Microsoft Access G4 Data |
| aga | ArcGIS ArcGlobe Data |
| agb | Game Boy Advance ROM Image |
| agc | Autodesk Simulation Mechanical Surface Contacts Text Data |
| agd | ActiGraph ActiLife Data |
| agd | AgileGraph Data File |
| agd2 | Adobe FreeHand 7 for Mac Data |
| agdata | Ag Leader InCommand Data |
| agdb | ANSYS DesignModeler Data |
| age | Age Encrypted Data |
| agent | Forte Agent Data |
