| .apalbum |
Aperture Album File |
| .ansym |
Adobe Edge Animate Library File |
| .appxsym |
Windows 8 App Package Symbols File |
| .adadownload |
Adobe Download Assistant Partial Download File |
| .abs |
Absolute Database File |
| .awlive |
Active Webcam Video File |
| .aglib |
Adobe Lightroom Library |
| .aecache |
After Effects Cache File |
| .appex |
OS X Application and System Extension File |
| .a78 |
Atari 7800 ROM |
| .aiv |
AIVault Data File |
| .asar |
Compressed Archive File |
| .avro |
Avro Data File |
| .adc |
Scanstudio 16 Color Image |
| .amu |
PictureGear Studio Photo Album File |
| .a3l |
Authorware 3 Library |
| .a4l |
Authorware 4 Library |
| .a3m |
Authorware 3 Macintosh File |
| .a3w |
Authorware 3 Windows File |
| .a4m |
Authorware 4 Macintosh File |
| .a4w |
Authorware 4 Windows File |
| .atrac |
Sony ATRAC Audio File |
| .albm |
HP Photo Printing Software Album File |
| .artwork |
ArtStudio Image |