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