A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym
.??_ Files ending in "_" are often compressed install files of the same name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.) .G Applause Data Chart Cliq Accessories Datebook Schedule Group [Linux Suite PDF Description] .G?? MicroSim PCBoard Photoplot Artwork File (?? is the page number within the job) .G3 G3 FAX File [XnView] [IrfanView] .G32 GFA BASIC 32 Program File PaperPort File .G3D GenDesigner 3.x Genealogy Database .G3F Zetafax TIFF File (fine resolution) .G3N Zetafax TIFF File (normal resolution) [XnView] .G4 GTX RasterCAD File Access [XnView] .G42 ADAPTA DLS/32 Supply Chain Planning (ASCII file with info about SKUs and product-groups) .G53 ADAPTA DLS/32 Supply Chain Planning (ASCII file with info about Bills of Material) .G8 PicLab Plane Three Graphics .GAB Dencom Global Address Book Export File Connectivity Memory Model Axo-axonic Connections Onto Presynaptic Terminals Input File .GAC Global Audio Control Skin .GAF Total Annihilation [XnView] .GAL Gallery of Pictures Corel Multimedia Manager Album .GAM GammaFax Fax Document TADS 2.x Game File Baldur's Gate Game File The Games Factory, Multimedia Fusion, Click and Create Game File All Looking Glass Studio Dark Engine Games [Fan Site - LGS no longer in business] (Dark object hierarchy) Infinity Game Engine Saved Game [More Info] .GANI Graal Game Animation (Graal is a massively-multiplayer game.) [GRAALSHOP.EXE edits (no link to file)] .GAP Electrical Generation Analysis and Planification .GAS Intelligence Tracking System Data File (Law Enforcement Data Collection) .GAT Gator File (password manager) .GAU Gaussian Input File (MIME type chemical/x-gaussian-input) Microsoft Flight Simulator Gauge (e.g., altimiter.gau) .GAX Age of Empires II: The Conquerors Expansion Saved Game .GAY Reported as Sometimes a Porn File (presumably a renamed standard graphic file) .GB Chinese Nintendo GameBoy Emulator ROM Image File Printfox/Pagefox [XnView] .GBA Nintendo Game Boy Advance ROM Image GrabIt Batch Files .GBC Nintendo GameBoy Color Emulator ROM Image File .GBD Gator Banner File ACT! Contact Manager for Windows .GBF InteGrade Pro Gradebook File .GBK Interbase Database Backup .GBL VAXTPU Global Definitions (VAXTPU is default OpenVMS editor) .GBR GIMP Brush File [GIMP] [XnView] Gerber Format File (Graphics Language for the Electronics Industry) [Viewer] .GBS Gameshark Online Save/Snapshot .GBT Photoshop File .GBX Gerber File (printed circuit board layout) [ViewMaster Viewer] .GC Sierra Print Artist Greeting Card .GC1 Golden Common Lisp Source Code .GC3 Golden Common Lisp Source Code .GCA GOCA Graphics File G Compression Archiver Compressed File (link is Japanese site) [Mime Type application/x-gca-compressed] .GCB Guitar Chord Buster (MIDI Guitar simulator) .GCC VISUAL EPR COSEUL.EXE Result (table of components of Cartesian tensors) .GCD Generic CADD Drawing IsoBuster File Prassi CD Image GNUe Class Definition CD Ghost Task .GCF WinXComp Grouped Compressed File .GCI GTA2 Game File VISUAL EPR COSEUL.EXE Result (table of components of irreducible tensors) .GCK Giants:Citizen Kabuto Customized Map [Giants Map Manager] .GCM GeoConcept Map File Group Mail CMessage Store File .GCP Ground Control Point File (map projection) .GCR VISUAL EPR COSEUL.EXE Output .GCT ApplinX Screen Scrapper (unverified) .GDB Interbase Database Group Mail File .GDF GEOS Dictionary .GDG ReliaSoft RG (Reliability Growth Analysis Software) .GDM Bells, Whistles, and Sound Boards Module .GDR SymbianOS Bitmap Font File (can contain multiple typefaces) .GDS Image File Chip Layout Information .GE3 Mastercam Mill Tool Library (CAD/CAM) (usually in .\MILL6\MTOOLS folder) Mastercam Geometry File (CAD/CAM) (usually in .\MILL6\GE3 folder) .GED GEDCOM Family History File (Use any program that tracks family histories - Search Here) EnerGraphics File Graphic Environment Document Arts & Letters Graphics File .GEF GE Industrial Systems CIMPLICITY Workbench (CIMPLICITY is GE Fanuc's Human Machine Interface product) .GEM GEM (a desktop interface) File Digital Research GEM Paint [XnView] Ventura Publisher Vector Graphics .GEN Ventura-Generated Text File Chromeleon Generic Driver Configuration dBase Application Generator Compiled Template ArcView ARC/INFO UnGenerate Format Genius Family Tree Data .GEO VideoScope File GeoSoft Compressed Add-on Geoworks Geode GeoPaint [XnView] Trumpf ToPs File (CAD/CAM, laser cutting) Homeworld Geometry File [Format] .GER GerberView File (partial support for extended Gerber [RS-274X] file format) .GETRIGHT GetRight Download in Progress .GF gFx UNIX Plotting Program METAFONT Generic Font File Geometric Data Pilot Logbook for Grok File Starfleet Command - Empires At War File .GFA Bitmap Graphics File (see .GFX/Warcraft; files are similar) .GFB GIFBlast Compressed GIF Image .GFC Patton & Patton Flowcharting 4 File .GFD Menus for GNUe Forms VISUAL EPR Energy, Fields File .GFI Genigraphics Graphics Link Presentation .GFT NeoPaint Font GSP Family Tree (genealogy software) .GFW ArcView World File For GIF Image .GFX Genigraphics Graphics Link Presentation WarCraft II Image File Cue Club Image File Print Artist File .GFY Grafical 1.0 File .GG Sigmac Compiled Machine Code Gridgen File Sega GameGear Game ROM Image [Use MEKA Emulator] Koala Paint Compressed File [XnView] .GG1 Goofy Golf Deluxe Course .GG2 Goofy Golf Deluxe Saved Game .GGI GGI Extension .GGP GemCom Graphic Format .GGS Gameboy Emulator File [No$gmb] .GHO Symantec Ghost Disk Image File .GHS Lasertank High Scores Symantec Ghost Disk Image Span File (only used if disc is over 2GB - see .GHO) .GI Sony CD Extreme Global Image File [IsoBuster Data Recovery Tool] .GIB Graph-in-the-Box Chart .GID Windows Help Index File .GIF Graphic Interchange Format [XnView] [IrfanView] .GIFF Graphic Interchange Format [XnView] [IrfanView] .GIG Sound File .GIM Genigraphics Graphics Link Presentation .GINT Gintor Download Assistant Control File .GIW Graph-in-the-Box Presentation .GIX Genigraphics Graphics Link Presentation .GJD 7th Guest Game Archive 11th Hour Game Archive [Dragon UnPACKer] GetJet Professional Database (really an Access database) .GJF Gaussian Input Data File .GKH Ensoniq EPS Family Disk Image .GKS Gravis GripKey Document .GL GRASP - Graphical System for Presentation File .GLB Raptor: Call Of The Shadows Support File (1994 Apogee game) .GLD Glide File .GLF Grantleigh Labels .GLG MicroSim PCBoard Photoplot Job Description File (companion to the .g?? files) .GLH Wise Installer Temporary File (unverified) .GLM Glim Data File .GLS Babylon Builder (builds Babylon glossaries) Sothink Glenda Export Shape File .GLT Sothink Glenda File .GLU Cyberglue File (Web content management) .GLY Microsoft Word Glossary [Buy Office XP at Shop.Microsoft] .GM Autologic [XnView] .GM0 S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GM1 S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GM2 Autologic [XnView] S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GM3 S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GM4 Autologic [XnView] S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GM? Heroes of Might & Magic III Saved Game (? = number of human players in game) .GMA S.A.P.S. - Sharp Advanced Presentation Software Professional (Controls Sharp LCD Projectors) .GMAX gmax Game Creator .GMD Game Maker Stored Game (game under development--also see .GMR) Erdas IMAGINE Graphical Model (ERDAS IMAGINE is a tool for building (and executing) geographic expert systems for image classification, post classification refinement, and advanced GIS modeling.) .GME Interact DexDrive Playstation Memory Card Save .GMF Applause CGM Graphics .GML Game Maker Script .GMM Group Mail Message Log File .GMP GTA2 Game File Group Mail List Information File Geomorph Tile Map .GMR Schlafhorst Automation Graphical Monitor Record Game Maker Compiled Game (finished game--also see .GMD) .GMS Corel Global Macro File .GMT Scarlett Expert System Compiler Grammar File (Scarlett is not presently available) .GMX Group Mail Message File .GNA Genigraphics Graphics Link Presentation .GNO Genopro Genealogy Document File .GNT Micro Focus Generated Code .GNUMERIC Gnumeric Default XML-based File (replacement for proprietary spreadsheets) .GNX Genigraphics Graphics Link Presentation .GOB Dark Forces Game File [Dragon UnPACKer] Indiana Jones 3D Archive [Dragon UnPACKer] .GOC Geoworks Goc Source Code .GOH Geoworks Goc Header .GOO Kai's Power Goo / Kai's Supergoo .GOR Gorilla (Film & Video Production Management) .GOV Netmino File (SW under development Oct 2002) .GP Geoworks Glue Geode Parameter File .GP3 CCITT Group 3 File (fax) GuitarPro 3 .GP4 CCITT Group 4 File (fax) .GPD VISUAL EPR Input Data for PARAMS.EXE .GPF Believed to be a Japanese graphic file .GPG GnuPG Encrypted File (usually compatible with .PGP files) .GPH Lotus 1-2-3 Graph Stata Graph .GPK Omnigo Program Package [Added Info] .GPL GPS Log File (used by mapping software) .GPLT Gnuplot Plot Files .GPP GraphPap Graph Paper File Serif GraphicsPlus Object .GPR VISUAL EPR PARAMS.EXE Results .GPS Pocket CoPilot GPS Tracks Data File Tripod Data Systmes Survey Pro GPS Coordinate File (Surveyor data collection) .GPX BASIS File .GQA BI/Query Data Model Admin Layer .GQL BI/Query Data Model (used to be Andyne GQL) .GQU BI/Query Data Model User Layer .GR XGMML (eXtensible Graph Markup and Modeling Language) File .GR2 Windows 3.0 Screen Driver .GR3 Windows 3.0 Screen Grabber .GR4 Pathloss Network File Sharing File .GRA Flight Simulator File Microsoft Graph Chart SigmaPlot Data File STN Express Transcript Graphics File (search science databases through STN®) .GRAAL Offical Graal Level .GRAY Raw Gray Samples .GRB MS-DOS Shell Monitor .GRD Gradebook Power File Map Projection Grid File Golden Software Surfer (contouring and 3D surface mapping program) .GREY Picture File (raw GREY graphics) RAW RGB 24-bit Graphic [XnView] .GRF Graph Graph Plus Graph File Golden Software Graph File Grafix Idea File Graph Edit File [Part of DirectX SDK] DLG "Graphic" Format Insight II Standard Graph Definition File .GRL Matlab Graphic Format .GRM VISUAL EPR Input Data for FIntGraf .GRN Granny 3D Rendering Program .GRO Serious Sam Game File [Dragon UnPACKer] Warlords Battlecry Archive [Dragon UnPACKer] HP-48/49 GROB [XnView] .GRB HP-48/49 GROB [XnView] .GRP Windows Program Manager Group PixBase Pictures Group Duke Nukem 3D Archive [Dragon UnPACKer] Shadow Warrior Archive [Dragon UnPACKer] Starcraft Archive .GRPH ANSYS Plot (simulates multiphysical interactions) .GRQ Quickstep Barco Graphics .GRS Packedge Barco Graphics GetRight Skin (This is a standard ZIP file with .GRS extension.) .GRT VISUAL EPR Calculation Results of Fields .GRV Groove Networks File .GRX GetRight File List .GRY Picture File (raw GREY graphics) RAW RGB 24-bit Graphic [XnView] .GS1 GraphShow Presentation .GSC GeneStudio File (Molecular Biology Software) .GSD Professional Draw Vector Graphics .GSM Raw GSM 6.10 Audio Stream (Global System for Mobile Audio) Sound File [Linux Player] US Robotics Modem File .GSP Geometer's Sketchpad Material File .GST MapInfo Geoset File .GSW GraphShow Worksheet .GSX Gens 2.0 Save State File (Sega Genesis/Megadrive/32X Emulator) .GT2 Graoumftracker Music Module (new) .GTH Domino.Doc (Document retention software.) .GTK Graoumftracker Music Module (old) .GTP GuitarPro File MultiFS Video File Atari Executable File (Gem Takes Parameters) .GTS Genome Software Tempo Alarm Clock .GTT Guntram's Tabletweaving Thingy (Plots layouts for tablet-weaving) .GTY Gibson Tray File .GUP PopMail Data .GUR Gutsch & Exner Software Update Undo .GUX Gutsch & Exner Software Update .GV Grandview (DOS-based outline program by John Friend who licensed to Living Videotext; bought by Symantec) .GWF Benthic Golden (SQL query tool) .GWI Groupwise File (binary file that contains link information) .GWK GraphiCode Printed Circuit Board Drawing [Use GC Prevue to view] .GWP Greetings WorkShop File [Now Microsoft Picture It!] .GWS GeoMedia Geoworkspace File .GWX Genigraphics Graphics Link Presentation .GWZ Genigraphics Graphics Link Presentation .GX1 Show Partner Graphics File .GX2 Show Partner Graphics File .GXC General CADD Pro File .GXD General CADD Pro File GX-Reports File Jeol EX Spectrometer Data File .GXF General CADD Pro File .GXL Genus Graphics Library .GXM General CADD Pro File .GXP Jeol EX Spectrometer Data File .GXR Genexus Report Viewer GX-Reports File .GXT Grand Theft Auto 2/3 Text [GTA3 Mods to edit] .GYM Sega Genesis Music Logged Format .GZ Gzip Compressed Archive .GZIP Gzip Compressed Archive (more usually seen as .GZ) [Note: GZIP used on a single file will often produce a compressed file with the last letter of the original extension replaced with the letter Z; e.g., gzip 1d66.pdb will likely produce 1d66.pdz.] .GZL Go!Zilla File