| ado | Adobe Photoshop Duotone Settings |
| adv | Audio Driver |
| adv | Gravis UltraSound Virtual Device Driver |
| aee | ASUS Data Security Manager Encrypted File |
| aef | Cisco Unity Express Script |
| aex | Adobe After Effects Plug-in |
| agmodule | Adobe Photoshop Lightroom Module |
| agx1 | Adobe FreeHand for Mac Plug-in |
| ahd | Microsoft Dynamics AX Online Help Data |
| ahi | Microsoft Dynamics AX Online Help Index |
| ahq | Creative Audio HQ Plug-in |
| ai65 | Adobe PageMaker 6.5 for Mac Plugin |
| aif | Beatnik Player Plug-in Data |
| aip | Adobe Illustrator Plugin |
| aix | IBM AIX System File |
| aiz | Aero AIO Plug-in |
| ajz | Archos Jukebox Recorder Firmware |
| akwf | Oracle ZFS Storage Appliance Workflow |
| alh5 | Adobe PageMaker 5 for Mac Add-in |
| ali | Alice Plugin |
| almn | Mac OS X Location Manager Module |
| alt | Microsoft Dynamics AX Application Label Temporary File |
| amio | Adobe Audition AMIO Plugin |
| amxx | AMX Mod X Plugin |
| aoi | Microsoft Dynamics AX Application Object Index |
| aol | America Online |
| apd | Lotus 1-2-3 Printer Driver |
| api | Lotus 1-2-3 Printer Driver |
| apl | ACDSee Plugin |
| aplg | Audials One Plug-in |
