Ext.
|
Description
|
Used by
|
G
|
Data chart
|
APPLAUSE
|
G16
|
GoldED for DOS compiled config
|
GOLDED.EXE
|
G3P
|
data
|
Grand Prix 3 car physics
|
G8
|
Raw graphics file (one byte per pixel) plane three
|
PicLab - Cubicomb Picturemaker
|
GAF
|
Globa Game Engine audio format
|
Globa Game Engine
|
GAM
|
Fax
|
GammaFax
|
GB
|
Game Boy ROM
|
|
GB1
|
Game Maker backup file (can also be GB2, GB3, etc.)
|
|
GBA
|
Game Boy Advance ROM
|
|
GBC
|
Game Boy Color ROM
|
|
GBL
|
Genesis Bitmap Layout
|
|
GBL
|
Global definitions
|
VAXTPU editor
|
GBL
|
Global module in Basic programs
|
|
GBP
|
Genesis Bitmap Pattern
|
|
GBR
|
GIMP brush
|
|
GC1
|
Lisp source code
|
Golden Common Lisp 1.1
|
GC3
|
Lisp source code
|
Golden Common Lisp 1.3
|
GCA
|
IBM GOCA
|
GCGW
|
GCD
|
Graphics
|
|
GCD
|
General content descriptor
|
Wireless devices
|
GCD
|
Generic Cadd drawing
|
Generic Cadd, Visual Cadd
|
GCF
|
Game cache file
|
Steam content delivery system
|
GCX
|
Graph file
|
Mac OS X Grapher
|
GD3
|
Game Doctor Super NES ROM image
|
|
GDF
|
General Data Format for Biomedical Signals
|
Biomedical signal processing, Brain Computer Interfaces
|
GDF
|
Dictionary file
|
GEOS
|
GDF
|
Geographical Data Format
|
Various mapping software
|
GDF
|
IBM Graphics Data Format
|
Legacy IBM systems
|
GDL
|
Data
|
ArchiCAD model
|
GDS
|
McDonnell-Douglas Things
|
|
GE
|
GEcho config file
|
GEcho
|
GED
|
GEDCOM
|
Genealogy data exchange
|
GED
|
EDITOR's native file format
|
Arts & Letters
|
GED
|
GoldED for DOS compiled config file
|
GOLDED.EXE
|
GED
|
Graphics editor file
|
EnerGraphics
|
GED
|
Game Editor Data / project file
|
Game Editor
|
GEM
|
Vector graphics file
|
GEM - Ventura Publisher
|
GEN
|
Compiled template
|
dBASE Application Generator
|
GEN
|
Generated text
|
Ventura Publisher
|
GEO
|
Geode
|
Geoworks
|
GEO
|
GEOS specific file (application)
|
GEOS
|
GEO
|
GoldED for OS/2 compiled config file
|
GED2.EXE
|
GEX
|
GEcho config file
|
GEcho
|
GFB
|
Compressed GIF image created by GIFBLAST
|
gifblast.exe
|
GFO
|
SGI Radiosity
|
|
GFT
|
Font
|
NeoPaint
|
GFT
|
GEM-translator font file
|
|
GFX
|
Instant Artist graphics Files
|
Instant Artist
|
GFX
|
PCBoard @X-coded colorful text
|
GFX2COM - GFX2EXE
|
GHO
|
Norton Ghost File (first file)
|
Symantec
|
GHS
|
Norton Ghost File (split file)
|
Symantec
|
GHW
|
GHDL Wave file
|
GHDL/GTKWave data file
|
GIB
|
Chart
|
Graph-in-the-Box
|
GIB
|
GIMP animated brush
|
|
GID
|
Help index
|
windows 95 help
|
GIF
|
Compuserves' Graphics Interchange Format (bitmapped graphics)
|
QPeg - Display - CompuShow
|
GIW
|
Presentation
|
Graph-in-the-Box for Windows
|
GKH
|
Ensoniq Disk Image (VFX, SD, EPS, ASR, TS)
|
Ensoniq
|
GKS
|
Graphics Kernel System
|
|
GL
|
Animation format
|
grasprt.exe, PV
|
GL
|
Animation
|
GRASP GRAphical System for Presentation
|
GLB
|
Global module in Basic programs
|
|
GLM
|
Datafile
|
Glim
|
GLO
|
Global module in Basic programs
|
|
GLS
|
Datafile
|
Across
|
GLY
|
Winword Glossary
|
Microsoft Word
|
GM6
|
Game Maker Editable file as of version 6.x
|
|
GMD
|
Game Maker Editable file up to version 5.x
|
|
GMF
|
CGM graphics file
|
APPLAUSE
|
GMK
|
Game Maker Editable file as of version 7.x or 8.x
|
|
GML
|
Game Maker GML file
|
|
GMOD
|
Data
|
Golgotha 3D model
|
GMP
|
Geomorph tile map
|
SPX
|
GMS
|
Ghost Mouse Script
|
|
GMS
|
Gesture and Motion File Formats
|
|
GMT
|
data
|
RFactor car physics
|
GOC
|
Goc source code file
|
Geoworks
|
GOE
|
GOES graphic file
|
|
GOH
|
Goc header file
|
Geoworks
|
GP5
|
Guitar Pro 5 song
|
Guitar Pro 5
|
GP
|
Geode parameter file
|
Geoworks Glue
|
GP4
|
data
|
Grand Prix 4 car physics
|
GPH
|
Graph
|
Lotus 1-2-3/G
|
GPK
|
Omnigo program package
|
|
GPX
|
GPS eXchange Format
|
|
GR2
|
Screen driver
|
Windows 3.x
|
GRA
|
Datafile
|
SigmaPlot
|
GrADS
|
Metafile
|
|
GRAFFLE
|
OmniGraffle graph file
|
|
GRASP
|
Graphical System for Presentation
|
|
GRB
|
T-FLEX CAD file
|
Top Systems
|
GRB
|
MS-DOS Shell Monitor file
|
MS-DOS 5
|
GRD
|
Drivers for GRX (graphics library)
|
GRX (c) Free Soft. Found.
|
GRDNT
|
Image format used in the core of some very obscure customized operating systems to represent gradients; see also SCTOR
|
|
GRE
|
data
|
Grenoble Thermal ellipsoids Plot Program
|
GRF
|
Graph file
|
Graph Plus - Charisma
|
GRIB
|
Gridded Binary
|
|
GRN
|
Drivers for GRX (graphics library)
|
GRX (c) Free Soft. Found.
|
GRP
|
Group file
|
Windows 3.x - Papyrus
|
GRP
|
Pictures group
|
PixBase
|
GRY
|
Graphics format (RAW GREYz)
|
|
GS1
|
Presentation
|
GraphShow
|
GS3
|
data
|
GameStarter
|
GSA
|
data
|
Microsoft Office Groove Space Archive
|
GSD
|
Vector graphics
|
Professional Draw
|
GSM
|
Raw GSM 6.10 audio stream
|
AWAVE
|
GSW
|
Worksheet
|
GraphShow
|
GTA
|
data
|
Microsoft Office Groove Tool Archive
|
GUP
|
|
PopMail
|
GV
|
GrandView outline file
|
|
GVO
|
Data
|
GFXFX Vector Object
|
GWI
|
Groupwise File
|
Local saved Email
|
GXL
|
Graphics library
|
Genus
|
GZ
|
Archive
|
GNU zip - WinZipNT
|
GZR
|
data
|
GunZ action replay
|
Ext.
|
Description
|
Used by
|
H!
|
On-line help file
|
Flambeaux Help! Display Engine
|
H!
|
Pertext database
|
HELP.EXE
|
H--
|
C—language header
|
Sphinx C--
|
H
|
Header file (usually C language)
|
Watcom C/C++
|
H++
|
Header file
|
C++
|
HA
|
Archive
|
HA
|
HAL
|
Data file
|
Hyper Access Lite OS/2
|
HAM
|
Disk Drivers NPA
|
Novell NetWare
|
HAM
|
Hold And Modify
|
Deluxe Paint image file
|
HAP
|
Archive
|
HAP3
|
HBC
|
Compressed Archive File (Shrink Algorithm)
|
Hyperbac
|
HBC
|
Compressed Archive File (Shrink Fast Algorithm)
|
Hyperbac
|
HBE
|
Compressed, Encrypted Archive File (Shrink & AES256-bit Encryption)
|
Hyperbac
|
HBK
|
MathCAD handbook
|
MathCAD
|
HC
|
Header file
|
|
HCG
|
Document
|
HCLab
|
HCGS
|
Document
|
HCLab
|
HDD
|
data
|
disk image
|
HDD
|
HotDisc Designer label
|
|
HDF
|
Amiga Hard Disk Image
|
|
HDF
|
Help file
|
Help Development Kit
|
HDF
|
Hierarchical Data File graphics file
|
SDSC Image Tools
|
HDL
|
Alternate download file listing
|
Procomm Plus
|
HDMP
|
heap dumpfile
|
|
HDR
|
Datafile
|
Egret
|
HDR
|
Message header text
|
Procomm Plus - 1st Reader
|
HDR
|
PC-File+ Database header
|
|
HDR
|
SPOT image file
|
|
HDS
|
Hierarchical Data System
|
|
HDW
|
Vector graphics
|
Harvard Draw
|
HDX
|
Help index
|
AutoCAD - Zortech C++
|
HDZ
|
Amiga Zip compressed Hard Disk Image
|
|
HEP
|
Novell Help Librarian Data File
|
Novell NetWare
|
HEX
|
Hex dump
|
|
HFI
|
HP Font Info file
|
GEM
|
HGL
|
Highlight groups definitions
|
DN
|
HGL
|
HP Graphics Language graphics file
|
|
HH
|
C++ header file
|
|
HHH
|
Precompiled header file
|
Power C
|
HHP
|
Help information for remote users
|
Procomm Plus
|
HI
|
Game high scores table
|
|
HIN
|
Molecule
|
HyperChem
|
HIS
|
History of executing/viewing/editing
|
DN
|
HIS
|
Yard Information File
|
FYM
|
HKM
|
Stores sound in a bitmapped graphics file
|
|
HLB
|
Help library
|
VAX
|
HLP
|
Help file
|
WinHelp, Help Explorer Viewer
|
HLX
|
Multi Edit help file
|
MultiEdit 5.0
|
HLZ
|
Multi Edit packed help file
|
MultiEdit
|
HMI
|
Music format (MIDI)
|
|
HMM
|
Alternate Mail Read option menu
|
Procomm Plus
|
HMP
|
Music format (MIDI)
|
|
HMP
|
Hump Setup File - Obsolete as of version 2.4 (See SET and SWT files)
|
FYM
|
HNC
|
CNC program files Heidenhain (?) dialog
|
|
HOF
|
Hall Of Fame (game scores)
|
|
HP
|
Printout file for HP printers/plotters (HP/GL)
|
|
HP8
|
ASCII text HP Roman8 character set
|
NewWave Write
|
HPF
|
HP LaserJet fonts
|
PageMaker
|
HPG
|
see HPGL
|
|
HPGL
|
Plotter file vector graphics (Hewlett-Packard Graphics Language)
|
AutoCad - Harvard Graphics
|
HPI
|
Font information file
|
GEM
|
HPJ
|
Help project
|
Microsoft Help Compiler for Windows - HC.EXE
|
HPK
|
Archive
|
HPACK
|
HPM
|
Alternate Main menu for privileged users
|
Procomm Plus
|
HPM
|
EMM text
|
HP NewWave
|
HPM
|
High Performance Map
|
Quaestor 1.x
|
HPP
|
C++ header file
|
Zortech C++ - Watcom C/C++
|
HPPCL
|
Hewlett-Packard Printer Control Language
|
|
HQX
|
Archive (ASCII Mac)
|
BINHEX
|
HRF
|
Graphics file (Hitachi Raster Format)
|
|
HRM
|
Alternate Main menu for limited/normal users
|
Procomm Plus
|
HRZ
|
Graphics format
|
SSTV
|
HS2
|
Monochrome image
|
Postering
|
HSC
|
2-op FM music
|
HSC tracker - hscplay.exe
|
HSH
|
Disk image hash file
|
DriveSnapshot
|
HSI
|
Handmade Software Inc. graphics file almost JPEG
|
Image Alchemy
|
HST
|
History file
|
Procomm Plus
|
HTM
|
see HTML
|
|
HTML
|
Hypertext Markup Language (WWW)
|
Netscape - Mosaic - many
|
HTX
|
Hypertext file
|
|
HWA
|
Hollywood applet
|
Hollywood
|
HWD
|
Presentation
|
Hollywood Designer
|
HWP
|
Hangul Word Processor Document
|
Hangul (word processor)
|
HWS
|
Hollywood script
|
Hollywood
|
HXM
|
Alternate Protocol Selection menu for all users
|
Procomm Plus
|
HXS
|
Microsoft Help 2 compiled help file
|
Microsoft Windows, Help Explorer Viewer
|
HXX
|
C++ header file
|
|
HY1
|
Hyphenation algorithms
|
Ventura Publisher
|
HY2
|
Hyphenation algorithms
|
Ventura Publisher
|
HYC
|
Data
|
WordPerfect
|
HYD
|
Hyphenation dictionary
|
WordPerfect for Win
|
HYP
|
Archive
|
HYPER
|
