Types Alphabetical List starting with A
- A – FPK archive and ADA program
- AAE – Apple Photos sidecar image edit
- ABM – Hit player Audio Album files
- ACSM – Adobe Content Server Message
- ADOBEPASSDB_3 – Adobe password database
- AI – Adobe Ilustrator
- AIR – Adobe AIR Installation Package
- AML – ACPI Machine Language
- AMR – Adaptive Multi-Rate Codec
- APK – Android Package format
- ARJ – Archived by Robert Jung compress format
- ASPX – ASP.NET Source
- ATP – Visual Studio .NET Project
- AVI – Audio Video Interleave