| .apr |
ArcView Project File |
| .agif |
Active GIF Creator Project |
| .aawdef |
Ad-Aware Definitions File |
| .atz |
Aston Compiled Theme |
| .an8 |
Anim8or File |
| .arf |
WebEx Advanced Recording File |
| .aax |
Audible Enhanced Audiobook File |
| .asr |
ActionScript Remote Document |
| .abr |
Adobe Photoshop Brushes File |
| .anme |
Anime Studio Document |
| .artproj |
Artifacts Project |
| .amsorm |
OnLine Ringman Auction Client File |
| .alb |
Alpha Five Library |
| .adb |
Ada Body File |
| .asi |
Grand Theft Auto Mod Library |
| .aba |
Palm Address Book Archive |
| .aby |
AOL Address Book File |
| .agm |
DTS Multi-channel Pro Packer File |
| .am1 |
Adventure Maker |
| .at5 |
Lowrance Map File |
| .apf |
Adobe Profile File |
| .aam |
Authorware Map File |
| .aex |
After Effects Plug-in |
| .aao |
America's Army Map File |