| .ADP | Microsoft Corporation | Ficheiros de Base de Dados | Access Project Extension | Planit Alphacam | Planit Solutions, Inc. |
| .AEB | Vero Software | Ficheiros de Imagem 3D | Alphacam Wire EDM VB Macro File | Planit Alphacam | Planit Solutions, Inc. |
| .AED | Planit Solutions, Inc. | Ficheiros CAD | Alphacam Wire EDM Drawing | Planit Alphacam | Planit Solutions, Inc. |
| .AEM | Planit Solutions, Inc. | Ficheiros de Desenvolvedor | Alphacam Wire EDM Parameter Macro | Planit Alphacam | Planit Solutions, Inc. |
| .AFB | Planit Solutions, Inc. | Uncommon Files | Alphacam Flame VB Macro File | Planit Alphacam | Planit Solutions, Inc. |
| .AFD | Planit Solutions, Inc. | Ficheiros CAD | Alphacam Flame Drawing | Planit Alphacam | Planit Solutions, Inc. |
| .AFP | Garmin | Ficheiros GIS | XMap Flight Plan Statistic File | Planit Alphacam | Planit Solutions, Inc. |
| .AJD | Planit Solutions, Inc. | Ficheiros Gráficos | Alphacam Water Jet Drawing File | Planit Alphacam | Planit Solutions, Inc. |
| .AJM | Planit Solutions, Inc. | Ficheiros de Desenvolvedor | Alphacam Water Jet Parameter Macro | Planit Alphacam | Planit Solutions, Inc. |
| .AMB | Bolide Software | Ficheiros de Base de Dados | All My Books Database File | Planit Alphacam | Planit Solutions, Inc. |
| .AMD | Planit Solutions, Inc. | Ficheiros CAD | Alphacam 3D Mill/2D Mill Drawing | Planit Alphacam | Planit Solutions, Inc. |
| .AMT | Planit Solutions, Inc. | Ficheiros CAD | Alphacam 3D Mill, 2D Mill Tool | Planit Alphacam | Planit Solutions, Inc. |
| .ANL | Planit Solutions, Inc. | Ficheiros CAD | Alphacam Nest List | Planit Alphacam | Planit Solutions, Inc. |
| .APB | Planit Solutions, Inc. | Ficheiros de Desenvolvedor | Alphacam Punch VB Macro | Planit Alphacam | Planit Solutions, Inc. |
| .APM | Adobe Systems Incorporated | Ficheiros de Imagem Raster | Aldus Placeable Metafile Image | Planit Alphacam | Planit Solutions, Inc. |
| .APP | Nokia | Ficheiros Executáveis | Symbian OS Application | Planit Alphacam | Planit Solutions, Inc. |
| .ARD | Esko | Ficheiros CAD | ArtiosCAD Workspace File | Planit Alphacam | Planit Solutions, Inc. |
| .ART | Autodesk, Inc. | Ficheiros CAD | ArtCAM Model | Planit Alphacam | Planit Solutions, Inc. |
| .ASB | Planit Solutions, Inc. | Ficheiros Executáveis | Alphacam Stone VB Macro File | Planit Alphacam | Planit Solutions, Inc. |
| .ASP | Microsoft Corporation | Ficheiros Web | Active Server Page | Planit Alphacam | Planit Solutions, Inc. |
| .ATB | AnetSoft | Uncommon Files | AnetHelp Tools File | Planit Alphacam | Planit Solutions, Inc. |
| .ATD | Planit Solutions, Inc. | Ficheiros CAD | Alphacam Lathe Drawing | Planit Alphacam | Planit Solutions, Inc. |
| .ATH | Dell Boomi | Ficheiros de Configurações | Alienware AlienFX Theme File | Planit Alphacam | Planit Solutions, Inc. |
| .ATP | Planit Solutions, Inc. | Ficheiros CAD | Alphacam Lathe Post File | Planit Alphacam | Planit Solutions, Inc. |
| .ATT | Unknown Developer | Ficheiros Web | Web Form Post Data File | Planit Alphacam | Planit Solutions, Inc. |
| .AUF | Planit Solutions, Inc. | Ficheiros de Fonte | Alphacam User Font | Planit Alphacam | Planit Solutions, Inc. |
| .CTX | Microsoft Corporation | Ficheiros de Desenvolvedor | Visual Basic Control Binary File | Planit Alphacam | Planit Solutions, Inc. |
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