| appref-ms | Microsoft ClickOnce Application Reference |
| apv | BenMAP APV Configuration |
| apxt | DataLink Connect Settings Data |
| aren | Advanced Renamer Presets Data |
| arl | AOL Organizer File |
| ase | Adobe Photoshop Swatch Exchange File |
| asef | Adobe Photoshop Swatch Exchange File |
| asgp | HP-UX NIS Maps Configuration |
| at3p | AmpliTube 3 Presets |
| atb | BRLTTY Attributes Table Data |
| audibleprefs | Audible Preferences Data |
| aupreset | Apple Logic Studio Preset |
| aus | Outpost Firewall Pro Configuration |
| auth | ShopSite Store Authorization Data |
| ave | Avid Media Composer User Profile |
| avgconfig | AVG Antivirus Configuration |
| avgfv | AVG Internet Security UI Settings |
| avp | Avira AntiVirus Profile Data |
| avs | Avid Media Composer Settings |
| axc | Microsoft Dynamics AX Configuration |
| axl | ArcIMS Designer Viewer Configuration |
| axr | Advanced Archive Password Recovery Settings |
| b3p | Native Instruments Battery Preset |
| bar | Total Commander Button Bar Settings |
| baseconfig | AirPort Utility Settings |
| bashrc | Bash Configuration |
| bash_profile | Bash Shell User Profile |
| bau | OpenOffice.org AutoText Data |
| bbtl | BBEdit Tool Palette Data |
| bbu | BossBackup2 Backup Set |
| bce | BCE Configuration |
| bcf | Arbortext Editor Burst Configuration Data |
| bda | Tracked! Backup Configuration File |
| bdb2 | BrainMaster Settings |
| bgi | BgInfo Configuration |
