| .aod |
Dynamics AX Object Data File |
| .arr |
Amber Graphic File |
| .acs |
Agent Character File |
| .aawdef |
Ad-Aware Definitions File |
| .atz |
Aston Compiled Theme |
| .abr |
Adobe Photoshop Brushes File |
| .apf |
Adobe Profile File |
| .adi |
AOMEI Backupper Disk Backup File |
| .acb |
Adobe Photoshop Color Book File |
| .ass |
Aegisub Advanced Substation Alpha File |
| .avgdx |
AVG Diagnostics File |
| .auz |
Ableton Authorization File |
| .appup |
Erlang Application Upgrade File |
| .aml |
ACPI Machine Language File |
| .aoi |
Art of Illusion 3D Scene |
| .appdownload |
Mac App Store Partially Downloaded App |
| .aepkey |
Advanced Encryption Package Key File |
| .aria2 |
aria2 Control File |
| .ad |
After Dark Screensaver |
| .agd |
AgileGraph Data File |
| .ash |
Nintendo Wii System Menu File |
| .az! |
Vuze Partial Download File |
| .adadownload |
Adobe Download Assistant Partial Download File |
| .awc |
Emulex AWC Firmware Update File |