| .aif |
Audio Interchange File Format |
| .asf |
Advanced Systems Format File |
| .avi |
Audio Video Interleave File |
| .app |
Mac OS X Application |
| .azw |
Amazon Kindle eBook File |
| .ani |
Windows Animated Cursor |
| .avs |
AVS Preset File |
| .amr |
Adaptive Multi-Rate Codec File |
| .ape |
AVS Plugin Effects File |
| .aa |
Audible Audio Book File |
| .acd |
ACID Project File |
| .as |
ActionScript File |
| .aa3 |
ATRAC Audio File |
| .adt |
ACT! Document Template |
| .asd |
Word AutoSave File |
| .amz |
Amazon MP3 Downloader File |
| .afx |
Auto FX PhotoGraphic Edges Image |
| .acrobatsecuritysettings |
Adobe Acrobat Security Settings File |
| .arw |
Sony Alpha Digital Camera RAW image file |
| .aw |
Answer Wizard File |
| .axd |
ASP.NET Web Handler File |
| .acsm |
Adobe Content Server Message File |
| .acm |
Interplay Audio File |
| .att |
Web Form Post Data File |