| .aar |
Android Archive |
| .ada |
Ada Source Code |
| .aut |
AutoIt Script File |
| .actx |
DS Game Maker Action Description File |
| .am |
Automake Makefile Template |
| .anjuta |
Anjuta IDE Project File |
| .ascs |
ActionScript Communication Server File |
| .appxsym |
Windows 8 App Package Symbols File |
| .applet |
Eclipse Java Applet Policy File |
| .asdb |
Asphyre Sphinx Archive File |
| .alm |
Alpha Five Library |
| .adblock |
Alpha Five Library Temporary File |
| .a3x |
Compiled AutoIt v3 Script |
| .appex |
OS X Application and System Extension File |
| .aiml |
Artificial Intelligence Markup Language File |
| .b |
Grand Theft Auto 3 Saved Game File |
| .bbprojectd |
BBEdit Project Document |
| .bas |
BASIC Source Code File |
| .bcp |
BlackMagic Custom Palette |
| .bpl |
Bore Plan Log |
| .bpg |
BPG Image |
| .bbc |
BBC BASIC Data File |
| .bb |
Blitz Source Code File |
| .bs2 |
BASIC Stamp 2 Code File |