List of Extensions starting with the letter A – Name and description

  • A ADA programming language source code
  • A00 Split Multi-volume ARJ compressed archive (part 2)
  • A01 Split Multi-volume ARJ compressed archive (part 3)
  • A02 Split Multi-volume ARJ compressed archive (part 4)
  • A03 Split Multi-volume ARJ compressed archive (part 5)
  • A04 Split Multi-volume ARJ compressed archive (part 6)
  • A05 Split Multi-volume ARJ compressed archive (part 7)
  • AC Advanced Audio Coding
  • AAE Sidecar Image Edit
  • AAX Audible enhanced audio
  • ABC ABC Programming language
  • ABK Ability Write backup
  • ABM Album
  • ABR Adobe Photoshop Brush
  • ABS AB SuDoKu save game
  • ACD alan game
  • ACH eSignal
  • ACL ArchiCrypt Live secured
  • ACP Action! document
  • ACSM Adobe Content Server Message
  • ACT Action! presentation file
  • ACTION Mac OS X Automator action
  • ACV Adobe photoshop colour curves
  • ACX Atari ST Program
  • ADC ActiveDocs Clipping Catalog
  • ADF A.R.S.E.N.A.L game
  • ADT ACT! document template
  • AEP Activ E-Book project
  • AES:
    • Adobe After Effects Stabilizer settings
    • AES Crypt encrypted
  • AFA Astrotite compressed data
  • AFC Apple sound format
  • AFF Acorn vector draw
  • AFM Abassis data
  • AFP Advanced Function Presentation data
  • AFR FreeBSD
  • AI Adobe Illustrator graphics
  • AID ACDSee Classic thumbnail
  • AMR Adaptive Multi-Rate compressed audio
  • APK Android Package
  • ASPX Active Server Page Extended ASP.NET script
  • AZ WinDVD related
  • AZF Secure format
  • AZW Amazon Kindle eBook
  • AZW1 Amazon Kindle