| .ahu |
Adobe Photoshop HSL File |
| .alv |
Adobe Photoshop Levels File |
| .axt |
Adobe Photoshop Extract File |
| .awdb |
Access Walker Database File |
| .aea |
Ae Timer Alarm Document |
| .age3scn |
Age of Empires 3 Scenario File |
| .awm |
AllWebMenus Project File |
| .acd-bak |
MAGIX ACID Project Backup File |
| .atm |
Vue Atmospheres File |
| .asw |
ACDSee Slideshow Wizard File |
| .apd |
ACDSee Photo Document |
| .afd |
Alphacam Flame Drawing |
| .ashdisc |
Ashampoo Burning Studio Image |
| .ashbak |
Ashampoo Backup Archive |
| .alf |
ACT! Lookup File |
| .any |
AnyRail Layout Plan |
| .aggr |
Adobe Captivate Aggregate File |
| .admx |
Group Policy Administrative Template File |
| .aaf |
Advanced Authoring Format File |
| .aps |
Visual C++ Resource File |
| .abf |
Adobe Binary Screen Font File |
| .acp |
Alfresco Content Package |
| .adts |
Audio Data Transport Stream File |
| .arsc |
Android Package Resource File |