| .ASHX | Microsoft Corporation | Web Files | ASP.NET Web Handler File | LibreOffice | The Document Foundation |
| .ATT | Unknown Developer | Web Files | Web Form Post Data File | LibreOffice | The Document Foundation |
| .AXD | Microsoft Corporation | Web Files | ASP.NET Web Handler File | LibreOffice | The Document Foundation |
| .B | Rockstar Games | Game Files | Grand Theft Auto 3 Saved Game File | LibreOffice | The Document Foundation |
| .CF | Proofpoint, Inc. | Settings Files | Sendmail Configuration File | LibreOffice | The Document Foundation |
| .CSV | Unknown Developer | Data Files | Comma Separated Values File | LibreOffice | The Document Foundation |
| .CVS | Unknown Developer | Data Files | Comma Separated Values File | LibreOffice | The Document Foundation |
| .DBF | dBase, LLC | Database Files | Database File | LibreOffice Base | The Document Foundation |
| .DIZ | Unknown Developer | Text Files | Description In Zip File | LibreOffice Calc | The Document Foundation |
| .DOC | Microsoft Corporation | Text Files | Microsoft Word Document (before The 2007 Version) | LibreOffice | The Document Foundation |
| .DOCX | Microsoft Corporation | Text Files | Microsoft Word Open XML Document | LibreOffice | The Document Foundation |
| .FAQ | The Document Foundation | 3D Image Files | Frequently Asked Questions Document | LibreOffice | The Document Foundation |
| .HWP | Hancom, Inc. | Text Files | Hanword Document | LibreOffice | The Document Foundation |
| .ICF | Zoom Telephonics | Backup Files | Zoom Router Configuration File | LibreOffice | The Document Foundation |
| .JNLP | Oracle Corporation | Web Files | Java Web Start File | LibreOffice | The Document Foundation |
| .LOL | Apple | Developer Files | LOLCODE Source Code FIle | LibreOffice | The Document Foundation |
| .LST | Unknown Developer | Text Files | Data List | LibreOffice | The Document Foundation |
| .LYT | Adminsoft | Data Files | Adminsoft Document Layout File | LibreOffice | The Document Foundation |
| .MAB | Mozilla | Uncommon Files | Mozilla Address Book | LibreOffice | The Document Foundation |
| .MAN | Unknown Developer | Text Files | Unix Manual | LibreOffice | The Document Foundation |
| .ME | Unknown Developer | Uncommon Files | Temporary Delete Me File | LibreOffice | The Document Foundation |
| .NFO | Microsoft Corporation | System Files | System Information File | LibreOffice | The Document Foundation |
| .NOW | The Document Foundation | Text Files | Readme Text Document File | LibreOffice | The Document Foundation |
| .ODB | Various Developers | Database Files | OpenDocument Database | LibreOffice | The Document Foundation |
| .ODF | Oracle Corporation | Uncommon Files | OpenDocument Formula | LibreOffice | The Document Foundation |
| .ODG | Apache Software Foundation | Vector Image Files | OpenDocument Graphic File | LibreOffice | The Document Foundation |
| .ODM | Open Source | Text Files | OpenDocument Master Document | LibreOffice | The Document Foundation |
| .ODP | Oracle Corporation | Data Files | OpenDocument Presentation | LibreOffice | The Document Foundation |
| .ODS | Oracle Corporation | Spreadsheet Files | OpenDocument Spreadsheet | LibreOffice Calc | The Document Foundation |
| .ODT | Oracle Corporation | Text Files | OpenDocument Text Document | LibreOffice | The Document Foundation |
| .OOT | Apache HTTP Project Management Committee | Data Files | Apache OpenOffice Text Document | LibreOffice | The Document Foundation |
| .OTG | Apache Software Foundation | Vector Image Files | OpenDocument Graphic Template | LibreOffice | The Document Foundation |
| .OTP | Oracle Corporation | Data Files | OpenDocument Presentation | LibreOffice | The Document Foundation |
| .OTS | Apache Software Foundation | Spreadsheet Files | OpenDocument Spreadsheet Template | LibreOffice | The Document Foundation |
| .OTT | Apache Software Foundation | Text Files | OpenDocument Document Template | LibreOffice | The Document Foundation |
| .OXT | Sun Microsystems | Plugin Files | Apache OpenOffice Extension | LibreOffice | The Document Foundation |
| .PAGES | Apple | Text Files | Apple Pages Document | LibreOffice | The Document Foundation |
| .PDF | Adobe Systems Incorporated | Page Layout Files | Portable Document Format File | LibreOffice | The Document Foundation |
| .POTX | Microsoft Corporation | Data Files | PowerPoint Open XML Presentation Template | LibreOffice Impress | The Document Foundation |
| .PPTX | Microsoft Corporation | Data Files | PowerPoint Open XML Presentation | LibreOffice | The Document Foundation |
| .PSW | Microsoft Corporation | Uncommon Files | Windows Password Reset Disk File | LibreOffice | The Document Foundation |
| .PUB | Microsoft Corporation | Page Layout Files | Microsoft Publisher Document | LibreOffice | The Document Foundation |
| .PWI | Microsoft Corporation | Text Files | Pocket Word Document | LibreOffice | The Document Foundation |
| .README | The Document Foundation | Text Files | Readme Text Document File | LibreOffice | The Document Foundation |
| .RPT | SAP | Data Files | Crystal Reports File | LibreOffice | The Document Foundation |
| .RTX | The Document Foundation | Text Files | Rich Text Document | LibreOffice | The Document Foundation |
| .SCRIPT | Unknown Developer | Executable Files | Generic Script File | LibreOffice | The Document Foundation |
| .SDA | Oracle Corporation | Vector Image Files | StarOffice Drawing | LibreOffice | The Document Foundation |
| .SDC | Stardock Corporation | Backup Files | Stardock Central Download Archive | LibreOffice | The Document Foundation |
| .SDD | Programming Sunrise | Data Files | Smart Diary Suite Data File | LibreOffice | The Document Foundation |
| .SDP | Oracle Corporation | Data Files | StarOffice Presentation File | LibreOffice | The Document Foundation |
| .SDV | Pinnacle Systems Inc. | Video Files | Studio DV Project File | LibreOffice | The Document Foundation |
| .SDW | LizardTech | GIS Files | MrSID World File | LibreOffice | The Document Foundation |
| .SHT | The Document Foundation | Web Files | HTML File With Server Side Includes | LibreOffice | The Document Foundation |
| .SMF | Oracle Corporation | Text Files | StarMath Formula File | LibreOffice | The Document Foundation |
| .SMS | Sega | Game Files | Sega Master System ROM | LibreOffice | The Document Foundation |
| .SSC | Microsoft Corporation | Developer Files | SourceSafe Status File | LibreOffice | The Document Foundation |
| .STC | Adobe Systems Incorporated | Web Files | Contribute Connection Key File | LibreOffice | The Document Foundation |
| .STD | Oracle Corporation | Vector Image Files | Apache OpenOffice Drawing Template | LibreOffice | The Document Foundation |
| .STI | Oracle Corporation | Data Files | StarOffice Presentation Template | LibreOffice | The Document Foundation |
| .STM | Microsoft Corporation | Data Files | Exchange Streaming Media File | LibreOffice Calc | The Document Foundation |
| .STW | Oracle Corporation | Text Files | StarOffice Document Template | LibreOffice | The Document Foundation |
| .SVM | Star Division | Raster Image Files | StarView Metafile | LibreOffice | The Document Foundation |
| .SXC | Sun Microsystems | Spreadsheet Files | StarOffice Calc Spreadsheet | LibreOffice Calc | The Document Foundation |
| .SXD | ESRI | GIS Files | ArcScene Document | LibreOffice | The Document Foundation |
| .SXG | Oracle Corporation | Text Files | Apache OpenOffice Master Document | LibreOffice | The Document Foundation |
| .SXI | Oracle Corporation | Data Files | StarOffice Impress Presentation | LibreOffice | The Document Foundation |
| .SXW | Oracle Corporation | Text Files | StarOffice Writer Document | LibreOffice | The Document Foundation |
| .TSV | Unknown Developer | Data Files | Tab Separated Values File | LibreOffice | The Document Foundation |
| .UOF | The Document Foundation | Text Files | Uniform Office Document | LibreOffice | The Document Foundation |
| .VSD | Microsoft Corporation | Vector Image Files | Microsoft Visio Drawing File | LibreOffice | The Document Foundation |
| .VSDX | Microsoft Corporation | Vector Image Files | Visio Drawing | LibreOffice | The Document Foundation |
| .WDB | Microsoft Corporation | Database Files | Microsoft Works Database | LibreOffice | The Document Foundation |
| .WK1 | IBM | Data Files | Lotus Worksheet | LibreOffice Calc | The Document Foundation |
| .WPS | Kingsoft | Text Files | Kingsoft Writer Document | LibreOffice | The Document Foundation |
| .WRI | Microsoft Corporation | Text Files | Microsoft Write Document | LibreOffice | The Document Foundation |
| .XLS | Microsoft Corporation | Spreadsheet Files | Microsoft Excel 97 To 2003 Spreadsheet | LibreOffice Calc | The Document Foundation |
| .XLSX | Microsoft Corporation | Spreadsheet Files | Microsoft Excel Open XML Spreadsheet | LibreOffice | The Document Foundation |
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