File extension	The full name of the file	Popularity
File extension 3D	Survex 3D Cavern File
File extension 3DC	iGO 3D Building File
File extension 3DD	ArcGlobe Document
File extension 3DL	iGO Landmark File
File extension 477	MNS Shape Definition Companion File
File extension ADF	ArcView ARC/INFO coverage data file
File extension APL	ArcPad Layer File
File extension APR	ArcView Project File
File extension AQM	AlpineQuest Map File
File extension AT5	Lowrance Map File
File extension ATX	ArcGIS Attribute Index File
File extension AUX	Auxiliary File
File extension AVL	ArcView Legend File
File extension AXE	Microsoft Autoroute map file
File extension AXT	Microsoft AutoRoute Template
File extension BIL	ESRI BIL File
File extension BPW	Bitmap World File
File extension BT	Binary Terrain File
File extension COR	Trimble Corrected SSF File
File extension CUB	ISIS Cube File
File extension CVI	CassiniVision Map Image File
File extension DEM	Digital Elevation Model
File extension DIX	DIVA-GIS Export File
File extension DLG	Digital Line Graph
File extension DMF	Geosystem Digitals Map File
File extension DT0	DTED Level 0 File
File extension DT1	DTED Level 1 File
File extension DT2	DTED Level 2 File
File extension DVC	IDRISI Vector Definition File
File extension E00	ESRI map file export
File extension ERS	ER Mapper Data File
File extension EST	Streets & Trips Map File
File extension ETA	Google Earth Placemark File
File extension FBL	iGO Map File
File extension FDS	FME Custom Format File
File extension FFS	FME Desktop Feature Store File
File extension FLS	ArcView GIS Windows Help Supporting File
File extension FME	FME Mapping File
File extension FMI	FME Include File
File extension FMW	FME Workbench File
File extension GEOJSON	GeoJSON File
File extension GFW	GIF World File
File extension GLB	STK Globe File
File extension GMAP	Garmin Map File
File extension GMF	Geology Multi-File
File extension GML	Geography Markup Language File
File extension GPF	Geosoft Project File
File extension GPRX	Geoxa Project File
File extension GPS	Survey Pro Coordinate File
File extension GPX	GPS Exchange File
File extension GRB	GRIB Meteorological Data File
File extension GSB	Golden Software Boundary File
File extension GSI	Golden Software Interchange File
File extension GSM	MapViewer Project File
File extension GSR	Golden Software Reference File
File extension GSR2	Golden Software Reference File
File extension GST	MapInfo Geoset File
File extension GWS	Geosoft Workspace File
File extension HDR	ESRI BIL Header File
File extension HGT	SRTM Elevation Data File
File extension IMD	GIS Image Metadata File
File extension IMG	ERDAS IMAGINE Image File
File extension IMI	Magellan Map File
File extension JGW	JPEG World File
File extension JPGW	JPEG World File
File extension JPR	Fugawi Projection File
File extension JPW	World File for JPEG
File extension KML	Keyhole Markup Language File
File extension KMZ	Google Earth Placemark File
File extension LAN	ERDAS LAN File
File extension LPK	ArcGIS Layer Package
File extension MAP	NAVIGON Map File
File extension MDC	Merkaartor Document
File extension MID	MapInfo Data File
File extension MIF	MapInfo Interchange Format File
File extension MNH	Master Navigator Header File
File extension MPS	Pocket Streets Map File
File extension MSD	Map Service Definition File
File extension MWX	MapGuide Author Map Window XML File
File extension MXD	ArcGIS Map Document
File extension MXT	ArcGIS Map Template
File extension NGT	Noni GPSPlot Track File
File extension NM2	Navitel Map File
File extension NM3	Navitel 5 Map File
File extension NMAP	NaviComputer Map File
File extension NMC	ArcGIS Explorer Map Content File
File extension NMF	ArcGIS Explorer Map File
File extension NV2	Navionics Chart File
File extension OCD	OCAD Map File
File extension OSB	OpenStreetMap Binary Map File
File extension OSM	OpenStreetMap Map File
File extension OV2	TomTom Points of Interest Database
File extension PMF	ESRI Published Map File
File extension PRM	Route 66 Map File
File extension PTM	MapPoint Map File
File extension PTT	MapPoint Map Template
File extension RDC	IDRISI Raster Documentation File
File extension RDF	ArcGIS Report Document File
File extension REF	IDRISI Raster Image Reference File
File extension RGN	Garmin Regional Map File
File extension RMP	Magellan Raster Map File
File extension RRD	Reduced Resolution Dataset File
File extension RST	IDRISI Raster Image
File extension SAF	Street Atlas USA Map File
File extension SBN	ESRI Spatial Binary File
File extension SDF	Spatial Data Format File
File extension SDM	Spatial Data Modeling Language File
File extension SDW	MrSID World File
File extension SHP	ESRI Shapefile
File extension SLD	Styled Layer Descriptor File
File extension SMM	Map Manager Schema File
File extension SMP	IDRISI Palette File
File extension SSF	Trimble Standard Storage Format File
File extension STT	Streets & Trips Map Template
File extension STYLE	ArcGIS Style Manager File
File extension SVX	Survex Cavern Data File
File extension SXD	ArcScene Document
File extension SYM	TatukGIS Symbols File
File extension TAB	MapInfo TAB File
File extension TFRD	Tape Image Format Requirements Document
File extension TFW	World File for TIFF
File extension TH	Therion Data File
File extension TTKGP	TatukGIS Project File
File extension VCT	IDRISI Vector Image
File extension VDC	IDRISI Vector Documentation File
File extension VEC	IDRISI Vector File
File extension WFD	Wayfinder Map File
File extension WLD	ESRI World File
File extension WLX	MapSource Web Link File
File extension WOR	MapInfo Workspace File
File extension XOL	Swiss Map Overlay