| agt | PeerAgent Typed Executable E-mail Data |
| agtoolkit | Adobe Photoshop Lightroom Toolkit Data |
| agw | Aspen Graphics Window Data |
| agx | IBM Rational Rose XDE Data |
| ah | SEED AH Seismogram Data |
| ahb | AIM High Briefcase Report Data |
| ahead | SCAMP FITS Image Header |
| ahk | AutoHotkey Script |
| ahl | eMule Metadata |
| ahm | Acoustic Head Map File |
| ahn | Our Family Tree Data |
| ahp | Autodesk AutoCAD Help Data |
| ahstore | Microsoft SQL Server Property Hash Store |
| ahu | Adobe Photoshop Hue/Saturation Layer |
| ahv | Interfile 3.3 AHV File |
| ai | Advantage Data Dictionary Index |
| ai | MOPAC Internal Chemical Modeller Output |
| aia | Adobe Illustrator Action Data |
| aia | ANDI/netCDF Chromatography Data |
| aid | ACDSee Classic Thumbnail Data |
| aide | AIDE Data |
| aidf | AI BiddingCockpit 8 Specification Sheets |
| aidoc | AI Bietercockpit Document Data |
| aidocdef | AI Bietercockpit Document Definition Data |
| aif | Intuit QuickBooks Accountants Review Copy Data |
| aif | OS/2 Warp Application Information |
| aif | SmartWare Executable Program |
| aif | Symbian OS Application Information |
| aiform | AI Bietercockpit Form Data |
| aii | Telerik Test Studio Test Definitions File |
| aiilist | Telerik Test Studio Test List |
| aij | Oracle Database After-Image Journal |
| ail | AutoImager List |
| aim | AIMMS ASCII Model File |
| aim | AOL Instant Messenger Launcher |
