| .123dx |
123D Design Model File |
| ._xlsx |
Renamed Microsoft Excel Open XML Spreadsheet |
| .apk |
Android Package File |
| .accdb |
Access 2007 Database File |
| .acd-zip |
Sony ACID Project With Embedded Media File |
| .a2w |
Alice World |
| .ar |
Midtown Madness Data File |
| .atz |
Aston Compiled Theme |
| .azz |
AZZ Cardfile Database File |
| .accdt |
Microsoft Access Database Template |
| .alf |
ACT! Lookup File |
| .acp |
Alfresco Content Package |
| .a2theme |
Aston 2 Theme File |
| .ap_ |
ADT Android Developer Package |
| .azw2 |
Kindle Active Content App File |
| .arduboy |
Arduboy Game Package |
| .actc |
Action(s) Collection File |
| .anime |
Anime Studio Document |
| .aar |
Android Archive |
| .abs |
Absolute Database File |
| .bup |
McAfee Quarantined File |
| .big |
Electronic Arts Game Data File |
| .bm3 |
Sony Ericsson Backup File |
| .bmz |
Portal Bonus Map Zip File |