| File extension | Developer/Producer | File description |
|---|---|---|
| G file extension | BRL-CAD | BRL-CAD Geometry Format |
| G00 file extension | Key | Clannad Picture Image |
| G01 file extension | U.S. Army Corps of Engineers | HEC-RAS Geometry Format |
| G03 file extension | U.S. Army Corps of Engineers | HEC-RAS Geometry |
| G1 file extension | N/A | Gerber Inner Routing Layer 1 |
| G10 file extension | Garmin Ltd. | Garmin GPS Map |
| G12 file extension | N/A | CAMtastic Mid Layer 12 Gerber Data |
| G13 file extension | N/A | CAMtastic Mid Layer 13 Gerber Data |
| G14 file extension | N/A | CAMtastic Mid Layer 14 Gerber Data |
| G15 file extension | N/A | CAMtastic Mid Layer 15 Gerber Data |
| G2 file extension | N/A | Gerber Inner Routing Layer 2 |
| G3 file extension | CCITT | G3 Fax Format |
| G3A file extension | Casio | Casio Prizm Program Format |
| G3D file extension | GOM | GOM ATOS 3D Scan Format |
| G3F file extension | Equisys | Zetafax Fax |
| G3N file extension | N/A | Imaging Fax Image |
| G3P file extension | Casio | Casio Prizm Picture Image |
| G3X file extension | Knife Edge Software | RealFlight Content Format |
| G4 file extension | Microsoft Corporation | Microsoft Access Image Format |
| G41 file extension | N/A | Commodore 1541 Disk Image |
| G4B file extension | N/A | Sokoban++ Level |
| G5 file extension | N/A | CAMtastic Mid Layer Gerber Data |
| G64 file extension | N/A | C64 Emulator Disk Image |
| G721 file extension | N/A | Raw CCITT/ITU G.721 4-bit ADPCM Sound Format |
| G723 file extension | N/A | Raw CCITT/ITU G.723 ADPCM Sound Format |
| G723-3 file extension | N/A | Raw CCITT/ITU G.723 3-bit ADPCM Sound |
| G723-5 file extension | N/A | Raw CCITT/ITU G.723 5-bit ADPCM Sound |
| G726 file extension | N/A | Raw CCITT/ITU G.726 ADPCM Sound Data Format |
| G726-2 file extension | N/A | G726-2 - Raw CCITT/ITU G.726 2-bit ADPCM Sound |
| G726-3 file extension | N/A | G726-3 - Raw CCITT/ITU G.726 3-bit ADPCM Sound Format |
| G726-4 file extension | N/A | G726-4 - Raw CCITT/ITU G.726 4-bit ADPCM Sound Format |
| G726-5 file extension | N/A | G726-5 - Raw CCITT/ITU G.726 5-bit ADPCM Sound |
| GA3 file extension | Vernier Software & Technology | Graphical Analysis Document |
| GAB file extension | Dencom | Dencom Global Address Book Export |
| GAC file extension | Microsoft Corporation | Groove |
| GAD file extension | Math2Market GmbH | Geodict |
| GADGEPRJ file extension | Ashampoo | Gadge It Project Format |
| GADGET file extension | Microsoft | Windows Sidebar Gadget Format |
| GAF file extension | Cavedog Entertainment | Total Annihilation Animated Bitmap Format |
| GAI file extension | Adobe Systems Incorporated | Adobe SING Glyphlet Manager |
| GAL file extension | Molecular Devices | GenePix Array List Format |
| GALAXY file extension | Blizzard Entertainment | Blizzard Starcraft 2 Galaxy Script Format |
| GALLERY file extension | SMART Technologies | SMART Notebook Gallery Format |
| GALLERYCOLLECTION file extension | SMART Technologies | SMART Notebook Gallery Collection Format |
| GALLERYITEM file extension | SMART Technologies | SMART Notebook Gallery Item Format |
| GAM file extension | N/A | Game Format |
| GAMBAS file extension | SourceForge.net | Gambas Application |
| GAME file extension | Apple | Apple Mac OS X Chess Format |
| GAMEDATA file extension | Sandlot Games | Sandlot Game Data Format |
| GAMEPROJ file extension | GameSalad | GameSalad Game Project Format |
| GAN file extension | GanttProject | GanttProject Project Plan Format |
| GAP file extension | Ulead Systems | PhotoImpact Pencil Style |
| GAR file extension | GridGain Systems | GridGain Archive |
| GAS file extension | Blue Squirrel | Grab-a-Site Project |
| GAU file extension | Microsoft | Microsoft Flight Simulator Gauge Format |
| GAX file extension | Microsoft Studios | Age Of Empires II Save Game |
| GB file extension | N/A | Nintendo Gameboy ROM Image |
| GB1 file extension | YoYo Games | Game Maker Backup Format |
| GBA file extension | N/A | Nintendo Game Boy Advance ROM Image |
| GBAP file extension | Dream Design Entertainment | Dream Design Entertainment GLBasic Project Format |
| GBAS file extension | Dream Design Entertainment | Dream Design Entertainment GLBasic Source Format |
| GBASKIN file extension | N/A | GBA4iOS Controller Skin |
| GBC file extension | N/A | Nintendo GameBoy Colour Emulator ROM Image Format |
| GBCK file extension | Glarysoft Ltd. | Glary Utilities Backup |
| GBCSKIN file extension | N/A | GBA4iOS Controller Skin |
| GBD file extension | Great Budget Software | Great Budget Budget Definition |
| GBF file extension | Great Budget Software | Great Budget Fringe Definition |
| GBH file extension | Gigabar | GigaBar Scheme |
| GBI file extension | gBurner Systems | GBurner Disk Image Format |
| GBK file extension | NCBI | GenBank Data Format |
| GBL file extension | Microsoft Corporation | Microsoft Visual Basic Global Definition |
| GBLORB file extension | N/A | Interactive Fiction |
| GBM file extension | Genie-Soft Corporation | Genie Backup Manager Archive |
| GBO file extension | N/A | Gerber Bottom Overlay (silk Screen) |
| GBP file extension | Genie-Soft | Genie Backup Manager Pro Backup Index Format |
| GBPROJ file extension | Apple | Apple GarageBand Project Format |
| GBR file extension | N/A | Gerber Format |
| GBS file extension | N/A | Nintendo Game Boy Music Audio Data Format |
| GBT file extension | Adobe Systems Incorporated | Adobe Photoshop Format |
| GBX file extension | N/A | Gerber Format |
| GBXML file extension | N/A | Green Building XML |
| GC file extension | Arizona | GraphClick Format |
| GC3 file extension | Gold Hill Co. | Golden Common Lisp Source Code |
| GCA file extension | N/A | GCA Compressed Archive Format |
| GCA3 file extension | Steve Jackson Games | GURPS Character Assistant |
| GCA4 file extension | Steve Jackson Games | GURPS Character Assistant |
| GCA4BASE file extension | Steve Jackson Games | GURPS Character Assistant |
| GCA4PARTY file extension | Steve Jackson Games | GURPS Character Assistant |
| GCCV file extension | Adobe Systems Incorporated | PageMaker Filter |
| GCD file extension | Generic CADD | Generic CADD Drawing Format |
| GCDA file extension | Free Software Foundation, Inc. | GCC Gcov Profiling |
| GCDP file extension | Software Depot Online | Greeting Card Studio Project Format |
| GCF file extension | Valve | Steam Client Grid Cache Format |
| GCG file extension | N/A | GCG 8 Sequence Chemical Format |
| GCH file extension | N/A | C++ Precompiled Header |
| GCI file extension | Nintendo | Nintendo GameCube Saved Game Format |
| GCM file extension | Nintendo | GameCube Image Format |
| GCNO file extension | Free Software Foundation, Inc. | GCC Gcov Profiling |
| GCO file extension | N/A | Genbox Family History Chart Options |
| GCODE file extension | N/A | G-code Source |
| GCP file extension | Coloritto BV | Spectramap Group Properties |
| GCRD file extension | N/A | GnomeCard VCard |
| GCS file extension | GameShark | GameShark SharkSave For GameCube Format |
| GCSX file extension | Microsoft | Microsoft Office SmartArt Color Variation Package Format |
| GCT file extension | Ocarina Cheat Code Manager | Ocarina Cheat Code Manager Exported Cheat Format |
| GCW file extension | Microsoft | Microsoft Math Worksheet Format |
| GCX file extension | Apple | Apple Grapher Graph Format |
| GCZ file extension | N/A | Compressed GameCube/Wii ROM |
| GD file extension | Boutell.Com, Inc. | GD Library Picture Image |
| GDA file extension | The Open Group | Unix Manual Page Guide |
| GDB file extension | Borland | Database Format |
| GDBINDEXES file extension | Esri | ArcGIS Geodatabase Index |
| GDBTABLE file extension | Esri | ArcGIS Geodatabase |
| GDBTABLX file extension | Esri | ArcGIS Geodatabase |
| GDC file extension | ICONICS, Inc. | Iconics GraphWorx32 |
| GDD file extension | N/A | Gerber Drill Drawing Data |
| GDE file extension | GlobalQSL | GlobalQSL Graphic Editor |
| GDF file extension | GUESS | GUESS Graph Data Format |
| GDFMAKERPROJECT file extension | Microsoft | GDF Editor Project Format |
| GDH file extension | SmartWare Corporation | SmartWare High-low Graph |
| GDI file extension | Various Linux developers | Generic Download Install |
| GDIAGRAMSTYLE file extension | The Omni Groupg | OmniGraffle Diagram Style Format |
| GDL file extension | Graphisoft | ArchiCAD Geometric Description Language Data |
| GDM file extension | N/A | Bells, Whistles, And Sound Boards Module |
| GDN file extension | SmartWare Corporation | SmartWare Graph Definition |
| GDOC file extension | Link To Google Docs Web Application Document | |
| GDP file extension | Benjamin Marty | Scrolling Game Development Kit Project |
| GDQ file extension | SmartWare Corporation | SmartWare Quick Graph |
| GDR file extension | N/A | Symbian OS Bitmap Font Format |
| GDRAW file extension | Link To Google Drawings Web Application Drawing | |
| GDRIVE file extension | Arainia Solutions | Gizmo Virtual Drive Format |
| GDS file extension | Cadence Design Systems | Graphic Data System Format |
| GDSP file extension | Gold Disk Inc. | Astound |
| GDT file extension | Renegade Minds | Guitar & Drum Trainer Song Configuration |
| GDV file extension | SmartWare Corporation | SmartWare Graphics Screen Driver |
| GDW file extension | Majesco Entertainment | Jaws Unleashed Data Format |
| GDX file extension | GAMS Development Corporation | GAMS Result |
| GDYN file extension | N/A | GIMP Pressure Curves Output |
| GDZ file extension | Thoughtful Creations | Genbox Family History Data Initialization |
| GE2 file extension | Autodesk, Inc. | Maya 4 GE2 Exporter |
| GE3 file extension | CNC Software, Inc. | Mastercam Geometry |
| GE6 file extension | N/A | WinFamily 6 Genealogy |
| GEA file extension | Electronic Arts, Inc. | Fifa World Cup Game Data |
| GEB file extension | Peter Gebhard | Dr. Hardware |
| GED file extension | N/A | GEDCOM Family History Format |
| GEDATA file extension | Qlucore | Qlucore Omics Explorer Data Format |
| GEDCOM file extension | N/A | GEDCOM Genealogy Format |
| GEL file extension | N/A | Molecular Dynamics Image |
| GEM file extension | Ruby | GEM Vector Picture Format |
| GEMFILE file extension | Ruby community | Ruby RubyGems |
| GEMSPEC file extension | RubyGems | Ruby RubyGems Specification Format |
| GEN file extension | ESRI | Arcview ARC/INFO UnGenerate File Format |
| GENERICTEST file extension | Microsoft Corporation | Microsoft Visual Studio Generic Test |
| GENMODEL file extension | The Eclipse Foundation | Eclipse IDE Domain Gen Model |
| GEO file extension | N/A | VRML Geography Format |
| GEOJSON file extension | GeoJSON | GeoJSON Format |
| GEP file extension | Gepsoft Ltd. | GeneXproTools Data |
| GEPRINT file extension | Google Inc. | Google Earth Pro Map Setting |
| GER file extension | N/A | German Text/html Info |
| GES file extension | Jörg Wegner | PINGO GrADS Description |
| GET file extension | Persistence of Vision Raytracer Pty. Ltd. | Pov-Ray For Windows 3.x |
| GETRIGHT file extension | Headlight Software, Inc. | GetRight Unfinished Download |
| GEXF file extension | GEXF Working Group | Graph Exchange XML Graph Format |
| GF file extension | N/A | MetaFont Font Format |
| GFA file extension | GFA Software Technologies | GFA-BASIC Tokenized Source |
| GFAR file extension | Greenfoot.org | Greenfoot JAVA Archive |
| GFB file extension | GIFBlast | GIFBlast Compressed GIF Image Format |
| GFC file extension | Patton&Patton | Patton&Patton Flow Charting 4 Flowchart |
| GFD file extension | Gadwin Systems, Inc. | GeForms |
| GFF file extension | Roche NimbleGen, Inc. | SignalMap Gene-Finding Format (GFF) Data |
| GFIE file extension | Greenfish Software | Greenfish Icon Editor Pro Graphic |
| GFL file extension | Gadwin Systems, Inc. | GeForms |
| GFORM file extension | Link To Google Forms Web Application Form Document | |
| GFP file extension | GreenForce-Player | GreenForce-Player Audio Or Video Format |
| GFS file extension | Microsoft Corporation | Microsoft SharePoint WorkSpace Groove Remote |
| GFT file extension | NeoSoft Corp. | NeoPaint Font |
| GFW file extension | N/A | GIF World Format |
| GFX file extension | N/A | Genigraphics Graphics Link Presentation |
| GG file extension | Google Desktop Gadget Format | |
| GGB file extension | GeoGebra | GeoGebra Document Format |
| GGD file extension | CERC | GASTAR Output |
| GGF file extension | Trimble Navigation Limited | GPS Pathfinder Office Geoid Grid |
| GGG file extension | Sharon Dugdale & David Kibbey | Green Globs & Graphing Equations Game Record |
| GGI file extension | The GGI Project | GGI |
| GGM file extension | Sharon Dugdale & David Kibbey | Green Globs & Graphing Equations Saved State |
| GGP file extension | Gemcom Software International Inc. | GemCom Graphic Format |
| GGPK file extension | Grinding Gears Games | Grinding Gears Package |
| GGR file extension | GIMP | GIMP Gradient Format |
| GGS file extension | N/A | Gameboy Emulator |
| GGT file extension | GeoGebra Team | GeoGebra User-defined Tool |
| GGZ file extension | Garena Online | Garena Skin |
| GHC file extension | Microsoft Corporation | Visual Basic Constant Map |
| GHD file extension | N/A | Geonaute Keymaze Tracklog |
| GHO file extension | Symantec | Norton Ghost Backup Image Format |
| GHS file extension | Symantec | Norton Ghost Backup Format |
| GHT file extension | Symantec Corporation | Ghost Project |
| GHX file extension | Scott Davidson | Grasshopper |
| GI file extension | N/A | Global Image |
| GI! file extension | N/A | GigaSampler/GigaStudio Split |
| GIC file extension | BioWare | BioWare Aurora Engine Area |
| GID file extension | Microsoft | Microsoft Windows Help General Index Format |
| GIF file extension | N/A | Graphics Interchange File Format |
| GIF2 file extension | NetObjects Inc. | Netobjects Fusion Styles Lines |
| GIF89A file extension | N/A | GIF 89a Image |
| GIFENX file extension | Egis Technology Inc. | Egis Encrypted GIF |
| GIFF file extension | N/A | CompuServe Bitmap Image(Graphics Interchange Format) |
| GIG file extension | N/A | GigaSampler/GigaStudio Audio Format |
| GIH file extension | GIMP | GIMP Animated Brush |
| GIM file extension | Sony | Sony Playstation 3 Icon Format |
| GIN file extension | General Engine Management Systems | GEMS Engine Control Unit Format |
| GINSPECT_PRJ file extension | GOM | GOM Inspect Project Format |
| GIO file extension | N/A | Adagio Score Language Score Format |
| GIP file extension | Ethanole Solutions | Ghost Installer Package |
| GIR file extension | RETROBASE.NET | Gens Plus! Movie |
| GIS file extension | Zaplots | CFS Console Game Installer Settings Format |
| GIT file extension | BioWare | BioWare Aurora Game Engine Area |
| GITATTRIBUTES file extension | Scott Chacon | Pro Git Attribute |
| GITIGNORE file extension | Git | Git Ignore Format |
| GITKEEP file extension | N/A | Gitkeep |
| GJD file extension | Trilobyte | 7th Guest Game Archive |
| GJF file extension | Gaussian, Inc. | Gaussian Input Data |
| GKF file extension | Aptech Systems, Inc | GAUSS Engine License |
| GKH file extension | N/A | Ensoniq EPS Family Disk Floppy Format |
| GKO file extension | N/A | Gerber Keep Out Layer |
| GKP file extension | Locnet | GameKeyboard |
| GKS file extension | International Organization for Standardization | Graphical Kernel System Fle |
| GL file extension | N/A | Graphical System For Presentation Animation Format |
| GL2 file extension | N/A | HP Graphics Language Plotter |
| GLA file extension | SourceTec Software | Sothink SWF Easy Project Format |
| GLAD file extension | Broad Institute | GenePattern GLAD |
| GLADE file extension | The Glade Project | Glade Project Format |
| GLB file extension | Analytical Graphics | STK Globe Format |
| GLC file extension | Geometry Pty Ltd. | IGIS Data |
| GLD file extension | Microchip Technology | MPLAB C Compiler Linker Script Format |
| GLF file extension | Space Engine | Space Engine Shader Format |
| GLIF file extension | The RoboFab developers | Glyph Interchange Format |
| GLINK file extension | Link To Third-party Google Drive Web Application Document | |
| GLK file extension | Microsoft Corporation | Microsoft SharePoint WorkSpace Groove Shortcut |
| GLL file extension | AFMG Technologies GmbH | EASE SpeakerLab Compiled Text |
| GLM file extension | DInsight | DInsight Modeling Studio 3D CAM Model |
| GLO file extension | Adobe Systems | Adobe RoboHelp Glossary Format |
| GLOBAL file extension | N/A | Global Makefile |
| GLOS file extension | Microsoft Corporation | Microsoft Word For Mac Glossary |
| GLOX file extension | Microsoft | Microsoft Office SmartArt Graphic Layout Definitions Package Format |
| GLP file extension | EIVA a/s | NaviEdit Geoconsult Long Profile |
| GLS file extension | Babylon | Babylon Builder Format |
| GLU file extension | Cyberglue | Cyberglue |
| GLUE file extension | N/A | GlueMon Audio |
| GLUT file extension | SGI | OpenGL GLUT |
| GLUT2 file extension | Silicon Graphics, Inc. | OpenGL Glut-3.6 |
| GLUT3 file extension | SGI | OpenGL GLUT |
| GLX file extension | Pasco | DataStudio Experiment |
| GLY file extension | Microsoft | Microsoft Word Glossary Format |
| GLZ file extension | CPT | Crossword Power Tools Crossword Library |
| GM file extension | GameMonkey Script | GameMonkey Script |
| GM1 file extension | The 3DO Company | Heroes Of Might & Magic 3 Saved Game |
| GM2 file extension | The 3DO Company | Heroes Of Might & Magic III Saved Game |
| GM3 file extension | The 3DO Company | Heroes Of Might & Magic III Saved Game |
| GM4 file extension | N/A | Autologic Bitmap Image |
| GM6 file extension | YoYo Games | Game Maker Project Format |
| GM81 file extension | YoYo Games | GameMaker Data Format |
| GMANIFEST file extension | Google Inc. | Google Desktop Gadget Control |
| GMAP file extension | Garmin | Garmin Map Format |
| GMBCK file extension | YoYo Games | Game Maker Background Image Format |
| GMC file extension | Global Mapper Software LLC | Global Mapper Catalog |
| GMD file extension | N/A | Game Maker Stored Game |
| GME file extension | InterAct | Interact DexDrive Sony Playstation Memory Card Save |
| GMF file extension | N/A | Geology Multi-file |
| GMI file extension | Megalith-Systems | GPS Tuner Map Calibration Data |
| GMK file extension | YoYo Games | Game Maker Project Format |
| GML file extension | Galdos Systems | Geography Markup Language |
| GMM file extension | N/A | Global Mobile Media |
| GMMOD file extension | N/A | Game Maker 3D Model Format |
| GMMP file extension | Microsoft | WCS GMMP Gamut Mapping Profile |
| GMO file extension | N/A | GNU Gettext Machine Object Format |
| GMP file extension | Patrice St-Gelais | Geomorph Tile Map |
| GMR file extension | YoYo Games | Game Maker Compiled Game |
| GMRES file extension | YoYo Games | Game Maker Resource Format |
| GMS file extension | GMS | LibGMS Gesture And Motion Signal Format |
| GMSPR file extension | YoYo Games | GameMaker Sprite Format |
| GMT file extension | Image Space | RFactor Model Format |
| GMV file extension | Gens | Gens Movie Capture Format |
| GMW file extension | Global Mapper Software LLC | Global Mapper Workspace |
| GMX file extension | Infacta Ltd. | GroupMail Message |
| GMZ file extension | YoYo Games | GameMaker Complete Source |
| GNC file extension | N/A | Great Notions Embroidery |
| GND file extension | N/A | Geography Network Document |
| GNE file extension | Ludicorp | Flickr PHP Format |
| GNM file extension | N/A | GNM Output Music |
| GNO file extension | GenoPro | GenoPro Genealogy Document Format |
| GNP file extension | GNXAS | GNXAS GNPeak Output Format |
| GNS file extension | Sound Health Options | Sound Health Abacus Genesis |
| GNT file extension | Micro Focus International plc | Micro Focus COBOL Generated Code |
| GNUMAKEFILE file extension | GNU | GNU Make Makefile |
| GNUTAR file extension | Free Software Foundation | TAR Archive Format |
| GO file extension | N/A | Google Go Programming Language Source Code |
| GO! file extension | Headlight Software, Inc. | Go!Zilla Unfinished Download |
| GOA file extension | N/A | SpiceCAD |
| GOB file extension | LucasArts Entertainment Company, LLC | LucasArts Game Resource |
| GOC file extension | Berkeley Softworks | GEOS GOC Source Code |
| GOD file extension | Synbioz | God Configuration Format |
| GOF file extension | Okino Computer Graphics | GameExchange Raw Object Definition |
| GOFIN file extension | GOFIN sp. z o.o. | Druki Gofin Document |
| GOG file extension | WaveMachine Labs, Inc. | Drumagog Sample |
| GOLD file extension | The GNOME Project | Gnome Desktop |
| GOM file extension | GRETECH | GOpenMol Model Format |
| GOOMOD file extension | 2D Boy | World Of Goo Add-on |
| GOR file extension | Eidos Interactive Ltd. | Myth: The Fallen Lords Game Data |
| GORM file extension | N/A | Gorm Interface Resource Format |
| GOX file extension | ClickTeam | The Games Factory Extension |
| GP file extension | Arobas Music | Guitar Pro |
| GP1 file extension | DeLorme | Street Atlas GPS Log |
| GP2 file extension | N/A | Gerber Inner Plane 2 (negative) |
| GP3 file extension | Arobas Music | Guitar Pro 3 Project Format |
| GP4 file extension | Arobas Music | Guitar Pro 4 Project Format |
| GP5 file extension | Arobas Music | Guitar Pro 5 Project File Format |
| GPB file extension | Genie-Soft Corporation | Genie Backup Manager Configuration |
| GPBANK file extension | Arobas Music | Guitar Pro Audio Bank Format |
| GPC file extension | Genie-Soft Corporation | Genie Backup Manager Plugin |
| GPD file extension | RGB Light | Graphic PhotoDefiner Image Format |
| GPE file extension | GamePark | GP2X Video Game Executable Format |
| GPF file extension | Gravity Interactive | Ragnarok Online Gravity Re-packed Format |
| GPG file extension | Free Software Foundation | GNU Privacy Guard Public Keyring Format |
| GPH file extension | IBM | Lotus 1-2-3 Graph |
| GPI file extension | Garmin | Garmin Point Of Interest Format |
| GPJ file extension | Golden Software | Grapher Worksheet Project Or Project Format |
| GPK file extension | Steinberg | Steinberg WaveLab Audio Peak Format |
| GPL file extension | DeLorme | Street Atlas USA GPL Log |
| GPM file extension | Gravity Interactive Inc. | Ragnarok Online Update |
| GPN file extension | N/A | GlidePlan Map Document Format |
| GPP file extension | Music Practiced Perfectly | Serif GraphicsPlus Object Format |
| GPR file extension | Babylon | Babylon Glossary Builder Project Format |
| GPRJ file extension | Gearotic | Gearotic Motion Project |
| GPRX file extension | Creative GIS Solutions | Geoxa Project Format |
| GPS file extension | GRETECH | GOM Player Skin Format |
| GPT file extension | N/A | Gerber Top Pad Master |
| GPU file extension | GamePark | GP2X Utility Program Format |
| GPW file extension | Autodesk, Inc. | Autodesk AutoCAD Civil 3D Hydraflow Hydrographs Extension |
| GPX file extension | N/A | GPS EXchange Format |
| GPZ file extension | IBM | IBM DB2 Document Manager Document History |
| GQF file extension | Pedagoguery Software Inc. | GrafEq Data |
| GQS file extension | Pedagoguery Software Inc. | GrafEq Data |
| GQSX file extension | Microsoft | Microsoft Office SmartArt Style Definitions Package Format |
| GR2 file extension | RAD Game Tools | Granny 3D Format |
| GR4 file extension | Contract Telecommunication Engineering Ltd. | Pathloss Sharing |
| GRA file extension | Microsoft | Microsoft Graph Chart Format |
| GRADE file extension | GradeStat | GradeStat Document Format |
| GRADS file extension | Jörg Wegner | PINGO GrADS Data |
| GRAFFLE file extension | The Omni Group | OmniGraffle Drawing Format |
| GRAPHML file extension | The GraphML Team | Graph Markup Language Format |
| GRAPHMLZ file extension | N/A | Compressed GraphML Source Format |
| GRASP file extension | N/A | Graphical System For Presentation Animation Format |
| GRAY file extension | N/A | RAW Gray Samples Bitmap Image |
| GRB file extension | World Meteorological Organization | GRIB Meteorological Data Format |
| GRBDROPFILE file extension | Headlight Software, Inc. | GetRight |
| GRC file extension | Affymetrix, Inc. | Affymetrix Grid Control |
| GRD file extension | Adobe Systems | Adobe Photoshop Image Ready Gradient Format |
| GRDECL file extension | The Eclipse Foundation | Eclipse Specific |
| GREENFOOT file extension | Greenfoot.org | Greenfoot Project |
| GREY file extension | N/A | Raw Image Format |
| GRF file extension | N/A | Microsoft GraphEdit Filter Graph Format |
| GRG file extension | GreatProgs | GreatFamily Graphic Gallery |
| GRI file extension | Petrosys Pty Ltd | Petrosys Grid |
| GRIB file extension | N/A | WMO CBS FM 92-VIII Ext. Gridded Binary Format |
| GRID file extension | DonationCoder.com | GridMove Grid Settings |
| GRK file extension | Gradekeeper | Gradekeeper Document |
| GRL file extension | Microsoft | Microsoft Windows Update Status Format |
| GRLE file extension | GIANTS Software GmBH | Farming Simulator Save Game |
| GRM file extension | Stanford Business Software, Inc | MINOS |
| GRN file extension | RAD Game Tools | Granny 3D Format |
| GRO file extension | Hewlett-Packard | HP-48/49 Grob Graphic Image Format |
| GROB file extension | Hewlett-Packard | Graphic Object Bitmap Format |
| GROOVE file extension | Sony | Sony ACID Groove Format |
| GROOVY file extension | VMware, Inc. | Groovy Programming Language Script Format |
| GROUP file extension | Microsoft | Windows Mail Group Format |
| GROUPPROJ file extension | Embarcadero Technologies | Delphi Project Group Format |
| GROUPS file extension | WebMoney | WM Keeper CLASSIC Group |
| GROWLREGDICT file extension | Growl | Growl Temp Format |
| GROWLSTYLE file extension | Growl Team | Growl WebKit Style |
| GROWLTICKET file extension | Growl | Growl Notification Format |
| GROWLVIEW file extension | Growl Team | Growl Display Plugin |
| GRP file extension | SmarterTools | SmarterMail Group Format |
| GRR file extension | Gradekeeper | Gradekeeper Class Roster Format |
| GRS file extension | Headlight Software, Inc. | GetRight Skin |
| GRT file extension | Golden Software | Grapher Template |
| GRU file extension | FXpansion™ Audio UK Ltd. | Geist Preset |
| GRV file extension | Microsoft | Microsoft SharePoint WorkSpace Groove Format |
| GRW file extension | Naviter d.o.o. | SeeYou Waypoint |
| GRX file extension | Headlight Software, Inc. | GetRight File List |
| GRXML file extension | N/A | Grammar |
| GRY file extension | N/A | Raw Image (Raw GREY) |
| GS file extension | Verity Software House | GemStone Document Format |
| GS0 file extension | N/A | Sega Genesis (Megadrive) Emulator Quick Slot 0 Save Format |
| GS1 file extension | Bloodlust Software | Genecyst Save State 1 |
| GS3 file extension | GameStarter | Genecyst Game Save State 1 Format |
| GS4 file extension | Bloodlust Software | Genecyst Saved State Slot 4 |
| GSA file extension | Microsoft Corporation | Microsoft SharePoint WorkSpace Groove Working Space Archive Or Template |
| GSB file extension | Golden Software | Golden Software Boundary Data Format |
| GSBA file extension | InsaneMatt | GameSave Manager Save Backup |
| GSC file extension | Activision | Call Of Duty Script Format |
| GSCRIPT file extension | Google Inc. | Link To Google Scripts Web Application Script |
| GSCX file extension | Microsoft Corporation | Microsoft Office Diagram |
| GSD file extension | PROFIBUS & PROFINET International | Generic Station Description Format |
| GSDU file extension | InsaneMatt | GameSave Manager Database Update |
| GSE file extension | Psytech International | GeneSys Export |
| GSF file extension | Artifex Software | Ghostscript Fonts |
| GSFLIB file extension | N/A | Game Boy Advance Song Library |
| GSHEET file extension | Link To Google Sheets Web Application Spreadsheet Document | |
| GSI file extension | Golden Software | Golden Software Interchange Format |
| GSL file extension | Siber Systems, Inc. | GoodSync Job List |
| GSLIDES file extension | Link To Google Slides Web Application Presentation | |
| GSM file extension | N/A | GSM Sound Format |
| GSP file extension | Ipswitch | IMail Server Returned Mail |
| GSPROJ file extension | GameSalad | GameSalad Project Format |
| GSR file extension | Golden Software | Golden Software GIS Format |
| GSR2 file extension | Golden Software | Golden Software Reference Format |
| GSS file extension | N/A | Multi Game Memory Editor Memory Snapshot |
| GST file extension | MapInfo | MapInfo Geoset Format |
| GSTENCIL file extension | The Omni Group | OmniGraffle Stencil |
| GSVR file extension | Artifex Software | GhostScript |
| GSX file extension | N/A | Gens Sega Emulator Save State Format |
| GSYM file extension | Graphisoft | ArchiCAD For Mac Geometric Description Language |
| GSZ file extension | GEO-SLOPE International Ltd. | GeoStudio Project |
| GSZIP file extension | GameSalad | GameSalad Market Asset Format |
| GT file extension | N/A | Gold Thread Embroidery Format |
| GT2 file extension | SourceForge.net | Graoumf Tracker Music Module (MOD) |
| GTA file extension | Microsoft | Microsoft SharePoint WorkSpace Groove Tool Archive Format |
| GTABLE file extension | Link To Google Fusion Tables Web Application Table | |
| GTAR file extension | Free Software Foundation | GNU Tar Compressed Archive Format |
| GTC file extension | Graitec | Graitec Exchange Format |
| GTE file extension | GigaTrust | GigaTrust Protected |
| GTEMPLATE file extension | The Omni Group | OmniGraffle Template |
| GTH file extension | Olle Persson | Bibexcel |
| GTHR file extension | Microsoft | Gather Log Format |
| GTI file extension | Georgia Tech Research Corporation | STRUDL Input |
| GTKRC file extension | The GTK+ Project | GTK+ Skin Format |
| GTL file extension | N/A | Gerber Top Layer |
| GTM file extension | Charles H. King | GreekToMe Data Format |
| GTO file extension | Intuit Inc. | Quicken Online Data |
| GTP file extension | Arobas Music | Guitar Pro Project |
| GTS file extension | CaptiveWorks | CaptiveWorks PVR Video Recording Format |
| GTX file extension | Spiral Graphics Inc. | Genetica Seamless Texture Format |
| GUI file extension | Indigo Byte Systems | Dr.Explain Project Format |
| GUIDE file extension | Cloanto Italia srl | AmigaGuide Hypertext |
| GUIDES file extension | The Iconfactory | The Iconfactory XScope Guides Format |
| GUL file extension | Samsung Group | JungUm Global Viewer Korean Language |
| GUS file extension | Getscores.org | Universal Score Poster Script |
| GV file extension | AT&T | Graphviz DOT Language Format |
| GVG file extension | Kompass | Kompass Map |
| GVI file extension | Google Video Format | |
| GVIMRC file extension | gVim | GVim Settings Format |
| GVM file extension | Sega Corporation | Phantasy Star Online |
| GVN file extension | GeoVisu Development Team | GeoVisu Navigation Data |
| GVP file extension | Google Video Player Google Video Pointer Playlist Format | |
| GVR file extension | GeoVisu Development Team | GeoVisu Routes |
| GVT file extension | GeoVisu Development Team | GeoVisu Tracklogs |
| GVW file extension | GeoVisu Development Team | GeoVisu Waypoints |
| GVY file extension | VMware, Inc. | Groovy Script Format |
| GW file extension | Grassland, Soil & Water Research Laboratory | SWAT Groundwater Input |
| GWB file extension | VSN International | GenStat Book |
| GWF file extension | Benthic Software | Benthic Golden |
| GWI file extension | Novell | GroupWise Link Information Format |
| GWK file extension | GraphiCode | GC-Prevue GraphiCode PCB Job Format |
| GWL file extension | N/A | Nanoscribe General Writing Language |
| GWP file extension | Microsoft | Greetings WorkShop Format |
| GWS file extension | Intergraph | GeoMedia Geoworkspace Format |
| GWT file extension | N/A | SpaceStat Generalized Weights Format |
| GWV file extension | ESI LTD | Groundwater Vistas Packaged Model |
| GX2 file extension | N/A | Generic Cadd |
| GXA file extension | General CADD Products, Inc. | General CADD Attribute Data |
| GXC file extension | General CADD Products | General CADD Pro Component Data Format |
| GXD file extension | General CADD Products | General CADD Pro Drawing Format |
| GXF file extension | General CADD Products | General CADD Pro Font Data Format |
| GXH file extension | General CADD Products | General CADD Pro Hatch Pattern Format |
| GXK file extension | Galaxkey | Galaxkey File Manager Encrypted Format |
| GXL file extension | N/A | Graph Exchange Language Format |
| GXM file extension | General CADD Products | General CADD Pro Format |
| GXR file extension | Artech Consultores S.R.L. | GeneXus Report |
| GXT file extension | Rockstar Games | Grand Theft Auto 2 Game Format |
| GXW file extension | GRASS Development Team | GRASS GIS Workspace Layout Definition |
| GYM file extension | N/A | Sega Genesis/Mega Drive Music Logged |
| GYP file extension | Microsoft Corporation | Google Chromium GYP Input Configuration |
| GYPI file extension | N/A | Chrome/Chromium Include |
| GZ file extension | The GNU Project | GZIP Compressed Archive Format |
| GZ1 file extension | Orgadata AG | Orgadata LogiKal |
| GZ2 file extension | N/A | Misnamed BZ2 Format |
| GZA file extension | N/A | Bzip2 Compressed File Archive |
| GZF file extension | MaximumSoft Corp. | Webcopier |
| GZI file extension | N/A | GZip Compressed Archive |
| GZIP file extension | N/A | GNU ZIP Gzip Compressed Archive Format |
| GZL file extension | Headlight Software, Inc. | Go!Zillalist |
| GZP file extension | Joshua Haberman | Gazelle System Page |
| GZQUAR file extension | Softwin | BitDefender Quarantine |
| GZR file extension | MAIET Entertainment, Inc. | GunZ |
Web Developer acting on his own, author of Internet solutions facilitating working with new technologies for less advanced users. Internet maniac.
