ATP-Alphacam-Lathe-Post-Planit
ATP-Anti-Tracks-Plug-in-RIGHT-Utilities-Inc
ATP-ATRAC-encoded-audio-Header
ATP-Automise-project-file
ATP-Visual-Studio-NET-ACT-Project-Microsoft-Corporation
ATPZ-Automise-Compressed-Project-File-VSoft-Technologies-Pty-Ltd
ATRAC-Sony-ATRAC-Audio-File
ATR-Atari-8-bit-disk-image
ATR-Atari-Disk-Image-File-Atari
AT-Rescue-Disk-file
ATR-Lightscape-Material-Library
ATR-MicroSim-PCBoard-attributes-report
ATS-Attityd-survey-program
ATS-Audiotools-file
ATS-Unrelated-Inventions-Audiotools-Plug-in
ATT-AT-T-Group-4-bitmap
ATT-Data-file-commonly-used-with-Web-forms
ATTR-Apple-iPhoto-image-attributes
ATTR-iPhoto-image-data-Header
ATW-AnyTime-Deluxe-for-Windows-File
ATX-Alphasoft-Trueterm-2001-Dictionaries
ATX-Animation-Master-Plugin-File
ATX-A-ZIP-formatted-Compressed-Archive
ATX-Texture-plugin-Animation-Master
ATY-3D-Topicscape-association-type-file
ATY-3D-Topicscape-File
ATY-Association-Placeholder-File
ATYP-FileTYPE-_-AutoTYPE
ATZ-Aston-compiled-theme
ATZ-Aston-Compiled-Theme-Gladiators-Software
ATZ-Atomic-Time-Zone-File
AU3-AutoIt-v3-file
AU3-AutoIt-v3-Script
AU-Audacity-audio-block
AU-Audio-File
AU-Audio-U-law-pronounced-mu-law
AUC-Advanced-URL-Catalog-Database-Jordysoft-com
AUCD-AppleCD-Audio-Player
AUD-Audio-file-Westwood-Studios-Kyrandia-3-C-C-RedAlert-C-C-TS
AUDIOCD-Audio-CD-file
Audio-file
AUF-Alphacam-User-Font-Planit
AUF-ASAUpdaterV2-Update-File-ASA-Datec-Datensystem-GmbH
AUF-Audacity-block-file
AUF-Hansen-Information-Technologies-Login-Information-Hansen-Information-Technologies
AU-law-sound-file
AUM-Adobe-Update-Manager-data-Header
AUM-Adobe-Update-Manager-data-UTF-8-Header
AU-NeXT-Sun-uLaw-AUdio-format-Header
A-UNIX-Archive-Library
TechTarget file types