| .ECF | Microsoft Corporation | Einstellungsdateien | Outlook Add-in | Microsoft Outlook | Microsoft Corporation |
| .ECU | Open Source | Einstellungsdateien | TunerPro ECU Configurator Data | TunerPro | Open Source |
| .EDL | Avid Technology | Einstellungsdateien | Edit Decision List File | Adobe Premiere Pro CC | Adobe Systems Incorporated |
| .EDR | BALARAD | Einstellungsdateien | Embird Color Palette | Embroidermodder 2 | Open Source |
| .EFC | Unknown Developer | Einstellungsdateien | EFCoins File | Unknown Software | Unknown Developer |
| .EFT | Cay Horstmann | Einstellungsdateien | ChiWriter High Resolution Screen Font | ChiWriter | Cay Horstmann |
| .EHI | Evozi | Einstellungsdateien | HTTP Injector Config File | HTTP Injector | Evozi |
| .ELE | Zemax | Einstellungsdateien | ZEMAX Element Drawing Settings | ZEMAX | Zemax |
| .ELM | Open Source | Einstellungsdateien | Eternal Lands Map File | Eternal Lands | Open Source |
| .EMM | MindMaple Inc. | Einstellungsdateien | MindMaple Map | MindMaple | MindMaple Inc. |
| .ENC | Smith Micro Software | Einstellungsdateien | Encoded Data File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .END | Corel | Einstellungsdateien | CorelDRAW Arrow-head Definition Data | CorelDRAW Graphics Suite | Corel |
| .ENP | Thomson Reuters Corporation | Einstellungsdateien | EndNote Preferences File | EndNote | Thomson Reuters Corporation |
| .ENS | Thomson Reuters Corporation | Einstellungsdateien | EndNote Style File | EndNote | Thomson Reuters Corporation |
| .ENV | Adobe Systems Incorporated | Einstellungsdateien | Adobe Dictionary Data File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .ENZ | Thomson Reuters Corporation | Einstellungsdateien | EndNote Connection File | Thomson Reuters EndNote | Clarivate Analytics |
| .EPR | Adobe Systems Incorporated | Einstellungsdateien | Photoshop AME Preset File | Adobe Photoshop CC | Adobe Systems Incorporated |
| .EPRO | Open Source | Einstellungsdateien | eProxy For Android Configuration File | eProxy for Android | Open Source |
| .EQF | Nullsoft | Einstellungsdateien | Winamp Equalizer Preset File | Nullsoft Winamp | Nullsoft |
| .EQL | Design Science | Einstellungsdateien | MathType Settings | Design Science MathType | Design Science |
| .EQP | Design Science | Einstellungsdateien | MathType Preferences | MathType | Design Science |
| .ESI | Open Source | Einstellungsdateien | Escape Level Index File | Escape | Open Source |
| .ETFF | Encrypt4all Software | Einstellungsdateien | Encrypt4all Theme File | Encrypt4all | Encrypt4all Software |
| .EUM | WaveRider Communications Inc. | Einstellungsdateien | Enterprise User Monitor Configuration File | WaveRider EUM Configuration Utility | WaveRider Communications Inc. |
| .EV3 | The LEGO Group | Einstellungsdateien | LEGO MINDSTORMS EV3 Project | LEGO MINDSTORMS EV3 | The LEGO Group |
| .EVP | Miracle Castle | Einstellungsdateien | Talisman Online Game Data | Talisman Online | Miracle Castle |
| .EWPRJ | National Instruments | Einstellungsdateien | Ultiboard Layout Project | Circuit Design Suite | National Instruments |
| .EX | Symantec Corporation | Einstellungsdateien | Norton Ghost Template Data | Symantec Ghost Solution Suite | Symantec Corporation |
| .EXA | Aquila Software | Einstellungsdateien | Examine32 Saved Search Paramaters File | Examine32 | Aquila Software |
| .EXAMPLE | Open Source | Einstellungsdateien | Example Configuration File | Notepad++ | Don Ho |
| .EXP | Unknown Developer | Einstellungsdateien | Symbols Export File | Microsoft Visual Studio | Microsoft Corporation |
| .EXT | Symantec Corporation | Einstellungsdateien | Norton Commander Extension | Norton Commander | Symantec Corporation |
| .EZHEX | Logitech | Einstellungsdateien | Logitech Harmony Configuration File | Harmony Advanced Universal Remote | Logitech |
| .FAM | Electronic Arts | Einstellungsdateien | The Sims Family Data Game File | The Sims | Electronic Arts |
| .FAN | AutoDesSys, Inc. | Einstellungsdateien | Form•Z Animation File | AutoDesSys formZ | AutoDesSys, Inc. |
| .FAP | ACD Systems | Einstellungsdateien | ACD FotoAngelo Project | ACD FotoAngelo | ACD Systems |
| .FAT | Open Source | Einstellungsdateien | Zinf Theme File | Zinf Audio Player | Open Source |
| .FAV | Microsoft Corporation | Einstellungsdateien | Microsoft Outlook Bar-Shortcut | Microsoft Outlook | Microsoft Corporation |
| .FC | OpenText | Einstellungsdateien | FirstClass Settings File | OpenText FirstClass | OpenText |
| .FCC | Netegrity | Einstellungsdateien | Forms Credential Collector File | Netegrity SiteMinder | IBM |
| .FCM | fcraft.net | Einstellungsdateien | fCraft World File | fCraft | fcraft.net |
| .FD | Data Access Worldwide | Einstellungsdateien | DataFlex Data File | DataFlex | Data Access Worldwide |
| .FDC | Autodesk, Inc. | Einstellungsdateien | AutoCAD Field Catalog File | Autodesk AutoCAD | Autodesk, Inc. |
| .FEQ | Open Source | Einstellungsdateien | SuperEQ Equalizer Settings | Foobar2000 | Piotr Pawlowski |
| .FEV | Firelight Technologies | Einstellungsdateien | FMOD Audio Events File | Firelight Technologies FMOD Designer | Firelight Technologies |
| .FFX | Adobe Systems Incorporated | Einstellungsdateien | After Effects Preset File | Adobe After Effects | Adobe Systems Incorporated |
| .FGA | WinAbility Software | Einstellungsdateien | Folder Guard Attributes | Folder Guard | WinAbility Software |
| .FGM | Autodesk, Inc. | Einstellungsdateien | 3ds Max Final Gather Map File | Autodesk 3ds Max | Autodesk, Inc. |
| .FHX | Emerson | Einstellungsdateien | DeltaV Configuration | DeltaV | Emerson |
| .FI | Microsoft Corporation | Einstellungsdateien | Fortran Interface Data | Fortran | IBM |
| .FIG | Open Source | Einstellungsdateien | Xfig Drawing | Winfig | Andreas Schmidt |
| .FIN | Interscape | Einstellungsdateien | Sapir Torah Text | Sapir Torah | Interscape |
| .FIO | Adobe Systems Incorporated | Einstellungsdateien | PhotoStyler Graphics Filter | Aldus PhotoStyler | Adobe Systems Incorporated |
| .FIV | Forensic Innovations | Einstellungsdateien | File Investigator Database | File Investigator | Forensic Innovations |
| .FLD | Open Source | Einstellungsdateien | YSFLIGHT Field File | YSFlight | Open Source |
| .FLE | Unknown Developer | Einstellungsdateien | Scanner Settings File | Unknown Software | Unknown Developer |
| .FLT | Presagis | Einstellungsdateien | OpenFlight Scene Description File | ESRI ArcGIS for Desktop | ESRI (Environmental Systems Research Institute) |
| .FLX | Autodesk, Inc. | Einstellungsdateien | FLIC Animation | Apple QuickTime Player | Apple |
| .FM3 | IBM | Einstellungsdateien | Lotus 1-2-3 Spreadsheet Format File | Microsoft Excel | Microsoft Corporation |
| .FMB | Oracle Corporation | Einstellungsdateien | Oracle Forms Binary Source Code | Oracle Forms | Oracle Corporation |
| .FMP | Dreamingsoft | Einstellungsdateien | 123 Flash Menu Project | 123 Flash Menu | Dreamingsoft |
| .FMS | Mark Finney | Einstellungsdateien | FARSITE Initial Fuel Moistures File | FARSITE | Mark Finney |
| .FMT | Microsoft Corporation | Einstellungsdateien | FoxPro Format File | Microsoft Visual FoxPro | Microsoft Corporation |
| .FNC | E-on Software, Inc. | Einstellungsdateien | Vue Functions File | E-on Vue | E-on Software, Inc. |
| .FNP | IBM | Einstellungsdateien | IBM FileNet IDM Desktop Settings File | IBM FileNet | IBM |
| .FOL | SoftKey | Einstellungsdateien | PFS First Choice Database File | SoftKey PFS First Choice | SoftKey |
| .FORM | Oracle Corporation | Einstellungsdateien | NetBeans Java GUI Designer Form | NetBeans | Open Source |
| .FPL | Piotr Pawlowski | Einstellungsdateien | Foobar2000 Playlist File | Foobar2000 | Piotr Pawlowski |
| .FPT | Sage | Einstellungsdateien | ACT! Data File | Act! | Swiftpage, Inc. |
| .FPW | Microsoft Corporation | Einstellungsdateien | FoxPro Configuration | Microsoft Visual FoxPro | Microsoft Corporation |
| .FRAMES | Iconfactory | Einstellungsdateien | xScope Frames File | The Iconfactory xScope 4 | Iconfactory |
| .FRC | Dovetail Games | Einstellungsdateien | FS Recorder File | FS Recorder | Unknown Developer |
| .FSI | Microsoft Corporation | Einstellungsdateien | Visual F# Signature File | Microsoft Visual Studio | Microsoft Corporation |
| .FSK | Atari Corporation | Einstellungsdateien | Atari 8-bit Cassette Image | A8CAS | SourceForge |
| .FSS | Basta Computing | Einstellungsdateien | Splitty Data Split File | Basta Computing Splitty | Basta Computing |
| .FST | Image-Line | Einstellungsdateien | FL Studio State File | Image-Line FL Studio | Image-Line |
| .FTP | SolarWinds Inc. | Einstellungsdateien | FTP Configuration Data | FlashFXP | OpenSight Software, LLC. |
| .FUS | FXpansion Audio UK Ltd. | Einstellungsdateien | GURU Uninstall Script | GURU | FXpansion Audio UK Ltd. |
| .FVP | Unknown Developer | Einstellungsdateien | File Viewer Plus Batch Presets File | Unknown Software | Unknown Developer |
| .FWT | FacetCorp | Einstellungsdateien | FacetWin Configuration File | FacetWin | FacetCorp |
| .FXB | Steinberg | Einstellungsdateien | FX Bank File | Steinberg Cubase | Steinberg |
| .FXP | Microsoft Corporation | Einstellungsdateien | FoxPro Compiled Program | Microsoft Visual FoxPro | Microsoft Corporation |
| .G16 | SourceForge | Einstellungsdateien | GoldED Configuration File | GoldED | SourceForge |
| .GAP | Ulead Systems | Einstellungsdateien | PhotoImpact Pencil Style Data | PhotoImpact | Corel |
| .GCO | Thoughtful Creations | Einstellungsdateien | Genbox Family History Chart Options File | Genbox Family History | Thoughtful Creations |
| .GCSX | Microsoft Corporation | Einstellungsdateien | Microsoft Office SmartArt Color File | Microsoft Office | Microsoft Corporation |
| .GDF | Eytan Adar | Einstellungsdateien | GUESS Graph Data Format File | GUESS | Eytan Adar |
| .GDT | Open Source | Einstellungsdateien | Gretl Data File | gretl | Open Source |
| .GE | PhonicBloom Limited | Einstellungsdateien | Gecho Configuration File | Gecho Loopsynth | PhonicBloom Limited |
| .GEPRINT | Google | Einstellungsdateien | Google Earth Pro Map Settings | Google Earth | Google |
| .GHI | Unknown Developer | Einstellungsdateien | NCSA Mosaic Configuration File | Unknown Software | Unknown Developer |
| .GMW | Blue Marble Geographics | Einstellungsdateien | Global Mapper Workspace | Global Mapper | Blue Marble Geographics |
| .GPS | Molecular Devices | Einstellungsdateien | GenePix Settings File | GenePix Pro Software | Molecular Devices |
| .GQSX | Microsoft Corporation | Einstellungsdateien | Microsoft Office SmartArt Styles File | Microsoft Office | Microsoft Corporation |
| .GRD | Adobe Systems Incorporated | Einstellungsdateien | Photoshop Gradient File | Adobe Photoshop | Adobe Systems Incorporated |
| .GRID | João Paiva | Einstellungsdateien | GridMove Grid Settings | GridMove | João Paiva |
| .GRO | Open Source | Einstellungsdateien | Allegro MIDI File | Audacity | Open Source |
| .GRS | Headlight Software | Einstellungsdateien | GetRight Skin | GetRight | Headlight Software |
| .GRU | FXpansion Audio UK Ltd. | Einstellungsdateien | Geist Preset Data | Geist | FXpansion Audio UK Ltd. |
| .GTP | Ucamco | Einstellungsdateien | Gerber Top Solder Paste Data File | CadSoft EAGLE | Autodesk, Inc. |
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