| .123 | IBM | File con fogli di calcolo | Lotus 1-2-3 Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .CSV | Unknown Developer | File di dati | Comma Separated Values File | NeoOffice | Planamesa Software Inc. |
| .CVS | Unknown Developer | File di dati | Comma Separated Values File | NeoOffice | Planamesa Software Inc. |
| .DB | Dwayne Richard Hipp | File di database | Mobile Device Database File | NeoOffice | Planamesa Software Inc. |
| .DBF | dBase, LLC | File di database | Database File | NeoOffice | Planamesa Software Inc. |
| .DIF | Microsoft Corporation | File di dati | Data Interchange Format | NeoOffice | Planamesa Software Inc. |
| .DOCM | Microsoft Corporation | File di testo | Word Open XML Macro-Enabled Document | NeoOffice | Planamesa Software Inc. |
| .DOTM | Microsoft Corporation | File con layout di pagina | Word 2007 XML Macro-Enabled Template | NeoOffice | Planamesa Software Inc. |
| .DOTX | Microsoft Corporation | File con layout di pagina | Word 2007 XML Template | NeoOffice | Planamesa Software Inc. |
| .HWP | Hancom, Inc. | File di testo | Hanword Document | NeoOffice | Planamesa Software Inc. |
| .IM8 | Sun Microsystems | File con immagini raster | Sun Raster Graphic File | NeoOffice | Planamesa Software Inc. |
| .MET | Emulex Corporation | File di dati | eMule Resource File | NeoOffice | Planamesa Software Inc. |
| .ODB | Various Developers | File di database | OpenDocument Database | NeoOffice | Planamesa Software Inc. |
| .ODC | Microsoft Corporation | File di settaggi | Office Data Connection File | NeoOffice | Planamesa Software Inc. |
| .ODG | Apache Software Foundation | File con immagini vettoriali | OpenDocument Graphic File | NeoOffice | Planamesa Software Inc. |
| .ODI | Apache Software Foundation | File con immagini raster | OpenDocument Image | NeoOffice | Planamesa Software Inc. |
| .ODS | Oracle Corporation | File con fogli di calcolo | OpenDocument Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .ODT | Oracle Corporation | File di testo | OpenDocument Text Document | NeoOffice | Planamesa Software Inc. |
| .OTC | Apache Software Foundation | File vari | OpenDocument Chart Template | NeoOffice | Planamesa Software Inc. |
| .OTG | Apache Software Foundation | File con immagini vettoriali | OpenDocument Graphic Template | NeoOffice | Planamesa Software Inc. |
| .OTI | Apache Software Foundation | File con immagini raster | OpenDocument Image Template | NeoOffice | Planamesa Software Inc. |
| .OXT | Sun Microsystems | File con plugin | Apache OpenOffice Extension | NeoOffice | Planamesa Software Inc. |
| .PCD | PokéCheats | File di giochi | Pokémon Wonder Card File | NeoOffice | Planamesa Software Inc. |
| .POTM | Microsoft Corporation | File di dati | PowerPoint Open XML Macro-Enabled Presentation Template | NeoOffice | Planamesa Software Inc. |
| .POTX | Microsoft Corporation | File di dati | PowerPoint Open XML Presentation Template | NeoOffice | Planamesa Software Inc. |
| .PPM | The GIMP Development Team | File con immagini raster | Portable Pixmap Image File | NeoOffice | Planamesa Software Inc. |
| .PSW | Microsoft Corporation | File vari | Windows Password Reset Disk File | NeoOffice | Planamesa Software Inc. |
| .PWI | Microsoft Corporation | File di testo | Pocket Word Document | NeoOffice | Planamesa Software Inc. |
| .PXL | Microsoft Corporation | File di dati | Pocket Excel File | NeoOffice | Planamesa Software Inc. |
| .RAS | Remedy Entertainment | File di giochi | Remedy Archive System File | NeoOffice | Planamesa Software Inc. |
| .SDC | Stardock Corporation | File backup | Stardock Central Download Archive | NeoOffice | Planamesa Software Inc. |
| .SDD | Programming Sunrise | File di dati | Smart Diary Suite Data File | NeoOffice | Planamesa Software Inc. |
| .SDP | Oracle Corporation | File di dati | StarOffice Presentation File | NeoOffice | Planamesa Software Inc. |
| .SMF | Oracle Corporation | File di testo | StarMath Formula File | NeoOffice | Planamesa Software Inc. |
| .STC | Adobe Systems Incorporated | File web | Contribute Connection Key File | NeoOffice | Planamesa Software Inc. |
| .STD | Oracle Corporation | File con immagini vettoriali | Apache OpenOffice Drawing Template | NeoOffice | Planamesa Software Inc. |
| .STI | Oracle Corporation | File di dati | StarOffice Presentation Template | NeoOffice | Planamesa Software Inc. |
| .STW | Oracle Corporation | File di testo | StarOffice Document Template | NeoOffice | Planamesa Software Inc. |
| .SUN | Sun Microsystems | File con immagini raster | Sun Raster Graphic File | NeoOffice | Planamesa Software Inc. |
| .SXC | Sun Microsystems | File con fogli di calcolo | StarOffice Calc Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .SXI | Oracle Corporation | File di dati | StarOffice Impress Presentation | NeoOffice | Planamesa Software Inc. |
| .VOR | Sun Microsystems | File vari | StarOffice Template | NeoOffice | Planamesa Software Inc. |
| .WK! | IBM | File con fogli di calcolo | Lotus 1-2-3 Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .WK1 | IBM | File di dati | Lotus Worksheet | NeoOffice | Planamesa Software Inc. |
| .WP | Corel | File di testo | WordPerfect Document | NeoOffice | Planamesa Software Inc. |
| .WPD | Corel | File di testo | WordPerfect Document | NeoOffice | Planamesa Software Inc. |
| .WPS | Kingsoft | File di testo | Kingsoft Writer Document | NeoOffice | Planamesa Software Inc. |
| .WR! | IBM | File con fogli di calcolo | Lotus 1-2-3 Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .WRI | Microsoft Corporation | File di testo | Microsoft Write Document | NeoOffice | Planamesa Software Inc. |
| .XLS | Microsoft Corporation | File con fogli di calcolo | Microsoft Excel 97 To 2003 Spreadsheet | NeoOffice | Planamesa Software Inc. |
| .XLW | Microsoft Corporation | File di dati | Microsoft Excel Workspace | NeoOffice | Planamesa Software Inc. |
| .XPM | XnSoft | File con immagini raster | X11 Pixmap Graphic | NeoOffice | Planamesa Software Inc. |
di 1 
