The X
extension name file type Classification
$01 DOS Pipe File developer files
001 Multimedia Fusion Backup File developer files
4DB 4th Dimension Database Structure File developer files
4TH Forth Language File developer files
A Static Library developer files
A2W Alice World developer files
A3X Compiled AutoIt v3 Script developer files
AAB Android App Bundle developer files
AAR Android Archive developer files
AB Applix Builder File developer files
ABC ActionScript Byte Code File developer files
ABC ABC Source File developer files
ACD RSLogix 5000 Program developer files
ACP EditPlus Auto-Completion File developer files
ACT DS Game Maker Action File developer files
ACTX DS Game Maker Action Description File developer files
ADA Ada Source Code developer files
ADB Ada Body File developer files
ADBLOCK Alpha Five Library Temporary File developer files
ADDIN Visual Studio Add-in Definition File developer files
ADS Ada Specification File developer files
AGI Asterisk Gateway Interface File developer files
AIA MIT App Inventor Source Code File developer files
AIDL Android Interface Definition Language File developer files
AIML Artificial Intelligence Markup Language File developer files
ALB Alpha Five Library developer files
ALM Alpha Five Library developer files
ALP AnyLogic Project File developer files
ALX Alpha Five Library Index File developer files
AM Automake Makefile Template developer files
AM4 AutoPlay Media Studio 4 Project File developer files
AM5 AutoPlay Media Studio 5 Project File developer files
AM6 AutoPlay Media Studio 6 Project developer files
AM7 AutoPlay Media Studio 7 Project developer files
AML Arc Macro Language File developer files
AML Abstract Markup Language developer files
ANE Adobe AIR Native Extension developer files
ANJUTA Anjuta IDE Project File developer files
APA RSView Development Project Archive developer files
APKS APK Set Archive developer files
APPEX OS X Application and System Extension File developer files
APPLET Eclipse Java Applet Policy File developer files
APPX Windows 8 App Package developer files
APPXSYM Windows 8 App Package Symbols File developer files
APPXUPLOAD Windows 8 App Upload Package developer files
APR Apadana Project File developer files
APS Visual C++ Resource File developer files
AP_ ADT Android Developer Package developer files
ARR MultiMedia Fusion Array File developer files
ARSC Android Package Resource File developer files