| .123 | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet | Apache OpenOffice | Apache Software Foundation |
| .APT | Apache Software Foundation | Text Files | Almost Plain Text File | Apache OpenOffice | Apache Software Foundation |
| .BAU | Sun Microsystems | Settings Files | Apache OpenOffice AutoText File | Apache OpenOffice | Apache Software Foundation |
| .BIN | Unknown Developer | Disk Image Files | Binary Disk Image File | Apache OpenOffice | Apache Software Foundation |
| .CF | Proofpoint, Inc. | Settings Files | Sendmail Configuration File | Apache OpenOffice | Apache Software Foundation |
| .CSV | Unknown Developer | Data Files | Comma Separated Values File | Apache OpenOffice | Apache Software Foundation |
| .CVS | Unknown Developer | Data Files | Comma Separated Values File | Apache OpenOffice | Apache Software Foundation |
| .DB | Dwayne Richard Hipp | Database Files | Mobile Device Database File | Apache OpenOffice | Apache Software Foundation |
| .DBF | dBase, LLC | Database Files | Database File | Apache OpenOffice | Apache Software Foundation |
| .DIF | Microsoft Corporation | Data Files | Data Interchange Format | Apache OpenOffice | Apache Software Foundation |
| .DOC | Microsoft Corporation | Text Files | Microsoft Word Document (before The 2007 Version) | Apache OpenOffice | Apache Software Foundation |
| .DOCM | Microsoft Corporation | Text Files | Word Open XML Macro-Enabled Document | Apache OpenOffice | Apache Software Foundation |
| .DON | Apache Software Foundation | Data Files | Apache OpenOffice (OpenOffice.org) Log | Apache OpenOffice | Apache Software Foundation |
| .DOT | Microsoft Corporation | Page Layout Files | Word Document Template | Apache OpenOffice | Apache Software Foundation |
| .DOTM | Microsoft Corporation | Page Layout Files | Word 2007 XML Macro-Enabled Template | Apache OpenOffice | Apache Software Foundation |
| .DOTX | Microsoft Corporation | Page Layout Files | Word 2007 XML Template | Apache OpenOffice | Apache Software Foundation |
| .DPC | Microsoft Corporation | Data Files | Microsoft Office Resource File | Apache OpenOffice | Apache Software Foundation |
| .DUMP | Microsoft Corporation | System Files | Dump File | Apache OpenOffice | Apache Software Foundation |
| .EMF | Microsoft Corporation | Vector Image Files | Enhanced Windows Metafile | Apache OpenOffice | Apache Software Foundation |
| .HWP | Hancom, Inc. | Text Files | Hanword Document | Apache OpenOffice | Apache Software Foundation |
| .JNLP | Oracle Corporation | Web Files | Java Web Start File | Apache OpenOffice | Apache Software Foundation |
| .MAB | Mozilla | Uncommon Files | Mozilla Address Book | Apache OpenOffice | Apache Software Foundation |
| .MET | Emulex Corporation | Data Files | eMule Resource File | Apache OpenOffice | Apache Software Foundation |
| .ODB | Various Developers | Database Files | OpenDocument Database | Apache OpenOffice | Apache Software Foundation |
| .ODC | Microsoft Corporation | Settings Files | Office Data Connection File | Apache OpenOffice | Apache Software Foundation |
| .ODCCUBEFILE | Apache Software Foundation | Uncommon Files | OpenDocument 1 Chart | Apache OpenOffice | Apache Software Foundation |
| .ODF | Oracle Corporation | Uncommon Files | OpenDocument Formula | Apache OpenOffice | Apache Software Foundation |
| .ODG | Apache Software Foundation | Vector Image Files | OpenDocument Graphic File | Apache OpenOffice | Apache Software Foundation |
| .ODI | Apache Software Foundation | Raster Image Files | OpenDocument Image | Apache OpenOffice | Apache Software Foundation |
| .ODM | Open Source | Text Files | OpenDocument Master Document | Apache OpenOffice | Apache Software Foundation |
| .ODP | Oracle Corporation | Data Files | OpenDocument Presentation | Apache OpenOffice | Apache Software Foundation |
| .ODT | Oracle Corporation | Text Files | OpenDocument Text Document | Apache OpenOffice | Apache Software Foundation |
| .OOT | Apache HTTP Project Management Committee | Data Files | Apache OpenOffice Text Document | Apache OpenOffice | Apache Software Foundation |
| .OTC | Apache Software Foundation | Uncommon Files | OpenDocument Chart Template | Apache OpenOffice | Apache Software Foundation |
| .OTG | Apache Software Foundation | Vector Image Files | OpenDocument Graphic Template | Apache OpenOffice | Apache Software Foundation |
| .OTH | Apache Software Foundation | Web Files | OpenDocument HTML Template | Apache OpenOffice | Apache Software Foundation |
| .OTI | Apache Software Foundation | Raster Image Files | OpenDocument Image Template | Apache OpenOffice | Apache Software Foundation |
| .OTP | Oracle Corporation | Data Files | OpenDocument Presentation | Apache OpenOffice | Apache Software Foundation |
| .OTS | Apache Software Foundation | Spreadsheet Files | OpenDocument Spreadsheet Template | Apache OpenOffice | Apache Software Foundation |
| .OTT | Apache Software Foundation | Text Files | OpenDocument Document Template | Apache OpenOffice | Apache Software Foundation |
| .OXT | Sun Microsystems | Plugin Files | Apache OpenOffice Extension | Apache OpenOffice | Apache Software Foundation |
| .PAR | Siemens PLM Software | CAD Files | Solid Edge Part File | Apache OpenOffice | Apache Software Foundation |
| .PBA | Oracle Corporation | Plugin Files | OpenOffice.org Basic Protected Module File | Apache OpenOffice | Apache Software Foundation |
| .PCD | PokéCheats | Game Files | Pokémon Wonder Card File | Apache OpenOffice | Apache Software Foundation |
| .PMK | David Harris | Settings Files | Pegasus Mail Keyboard Settings | Apache OpenOffice | Apache Software Foundation |
| .PO | Sublime HQ Pty Ltd | Developer Files | Portable Object | Apache OpenOffice | Apache Software Foundation |
| .POT | Microsoft Corporation | Data Files | PowerPoint Template | Apache OpenOffice | Apache Software Foundation |
| .PPS | Microsoft Corporation | Data Files | PowerPoint Slide Show | Apache OpenOffice | Apache Software Foundation |
| .PPSX | Microsoft Corporation | Data Files | PowerPoint Open XML Slide Show | Apache OpenOffice | Apache Software Foundation |
| .PPT | Microsoft Corporation | Data Files | PowerPoint Presentation | Apache OpenOffice | Apache Software Foundation |
| .PPTX | Microsoft Corporation | Data Files | PowerPoint Open XML Presentation | Apache OpenOffice | Apache Software Foundation |
| .PSV | Sony | Game Files | PlayStation 2 Save File | Apache OpenOffice | Apache Software Foundation |
| .PSW | Microsoft Corporation | Uncommon Files | Windows Password Reset Disk File | Apache OpenOffice | Apache Software Foundation |
| .PWI | Microsoft Corporation | Text Files | Pocket Word Document | Apache OpenOffice | Apache Software Foundation |
| .RNG | Nokia | Audio Files | Nokia Composer Ringtone | Apache OpenOffice | Apache Software Foundation |
| .SBL | Adobe Systems Incorporated | Graphic Files | Shockwave Flash Object | Apache OpenOffice | Apache Software Foundation |
| .SDA | Oracle Corporation | Vector Image Files | StarOffice Drawing | Apache OpenOffice | Apache Software Foundation |
| .SDC | Stardock Corporation | Backup Files | Stardock Central Download Archive | Apache OpenOffice | Apache Software Foundation |
| .SDD | Programming Sunrise | Data Files | Smart Diary Suite Data File | Apache OpenOffice | Apache Software Foundation |
| .SDI | Intuit, Inc. | Data Files | QuickBooks Data File | Apache OpenOffice | Apache Software Foundation |
| .SDP | Oracle Corporation | Data Files | StarOffice Presentation File | Apache OpenOffice | Apache Software Foundation |
| .SDS | Oracle Corporation | Data Files | OpenOffice.org Chart | Apache OpenOffice | Apache Software Foundation |
| .SDV | Pinnacle Systems Inc. | Video Files | Studio DV Project File | Apache OpenOffice | Apache Software Foundation |
| .SDW | LizardTech | GIS Files | MrSID World File | Apache OpenOffice | Apache Software Foundation |
| .SFS | Open Source | Compressed Files | Squashfs File Archive | Apache OpenOffice | Apache Software Foundation |
| .SKI | Motorola | Settings Files | Motorola Phone Skin File | Apache OpenOffice | Apache Software Foundation |
| .SKV | Microsoft Corporation | Data Files | Semicolon Separated Values File | Apache OpenOffice | Apache Software Foundation |
| .SMF | Oracle Corporation | Text Files | StarMath Formula File | Apache OpenOffice | Apache Software Foundation |
| .SMS | Sega | Game Files | Sega Master System ROM | Apache OpenOffice | Apache Software Foundation |
| .SOB | Apache Software Foundation | Raster Image Files | OpenOffice.org Impress Bimap Styles File | Apache OpenOffice | Apache Software Foundation |
| .SOC | Apache Software Foundation | Settings Files | OpenOffice.org Configuration File | Apache OpenOffice | Apache Software Foundation |
| .SOD | id Software | Game Files | Spear Of Destiny Data File | Apache OpenOffice | Apache Software Foundation |
| .SOF | Apache Software Foundation | Data Files | Colour Palettes And Various Style Elements File | Apache OpenOffice | Apache Software Foundation |
| .SOG | Apache Software Foundation | Data Files | Apache OpenOffice (OpenOffice.org) Colour Palettes | Apache OpenOffice | Apache Software Foundation |
| .SRS | Microsoft Corporation | Settings Files | Outlook Send/Receive Settings File | Apache OpenOffice | Apache Software Foundation |
| .STC | Adobe Systems Incorporated | Web Files | Contribute Connection Key File | Apache OpenOffice | Apache Software Foundation |
| .STD | Oracle Corporation | Vector Image Files | Apache OpenOffice Drawing Template | Apache OpenOffice | Apache Software Foundation |
| .STI | Oracle Corporation | Data Files | StarOffice Presentation Template | Apache OpenOffice | Apache Software Foundation |
| .STW | Oracle Corporation | Text Files | StarOffice Document Template | Apache OpenOffice | Apache Software Foundation |
| .SVM | Star Division | Raster Image Files | StarView Metafile | Apache OpenOffice | Apache Software Foundation |
| .SWX | Apache Software Foundation | Text Files | OpenOffice.org 1.0 Text Document | Apache OpenOffice | Apache Software Foundation |
| .SXD | ESRI | GIS Files | ArcScene Document | Apache OpenOffice | Apache Software Foundation |
| .SXG | Oracle Corporation | Text Files | Apache OpenOffice Master Document | Apache OpenOffice | Apache Software Foundation |
| .SXI | Oracle Corporation | Data Files | StarOffice Impress Presentation | Apache OpenOffice | Apache Software Foundation |
| .SXW | Oracle Corporation | Text Files | StarOffice Writer Document | Apache OpenOffice | Apache Software Foundation |
| .THM | Sony | Uncommon Files | Sony Ericsson Mobile Phone Theme File | Apache OpenOffice | Apache Software Foundation |
| .TSV | Unknown Developer | Data Files | Tab Separated Values File | Apache OpenOffice | Apache Software Foundation |
| .UOF | The Document Foundation | Text Files | Uniform Office Document | Apache OpenOffice | Apache Software Foundation |
| .URD | Kinook Software, Inc. | Database Files | Ultra Recall Database File | Apache OpenOffice | Apache Software Foundation |
| .VOR | Sun Microsystems | Uncommon Files | StarOffice Template | Apache OpenOffice | Apache Software Foundation |
| .VSDX | Microsoft Corporation | Vector Image Files | Visio Drawing | Apache OpenOffice | Apache Software Foundation |
| .WK! | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet | Apache OpenOffice | Apache Software Foundation |
| .WKE | IBM | Spreadsheet Files | Lotus 1-2-3 Educational Version Worksheet | Apache OpenOffice | Apache Software Foundation |
| .WR! | IBM | Spreadsheet Files | Lotus 1-2-3 Spreadsheet | Apache OpenOffice | Apache Software Foundation |
| .XBA | Oracle Corporation | Plugin Files | OpenOffice.org Basic Module File | Apache OpenOffice | Apache Software Foundation |
| .XCU | Apache Software Foundation | Settings Files | OpenOffice.org Configuration File | Apache OpenOffice | Apache Software Foundation |
| .XLB | Microsoft Corporation | Settings Files | Excel Toolbars File | Apache OpenOffice | Apache Software Foundation |
| .XLSB | Microsoft Corporation | Spreadsheet Files | Excel Binary Spreadsheet | Apache OpenOffice | Apache Software Foundation |
| .XLSX | Microsoft Corporation | Spreadsheet Files | Microsoft Excel Open XML Spreadsheet | Apache OpenOffice | Apache Software Foundation |
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