- adf - ARC/INFO coverage data file
- agf - Atlas GIS native binary geodataset file
- ain - attribute index file
- aih - attribute index file
- alg - ER Mapper algorithm
- apr - ArcView Project File (ODB format)
- avl - legend template file (ODB format)
- avp - palette file (ODB format)
- ave - Avenue script
- avx - ArcView extension file (ODB format)
- ai - Adobe Illlustrator picture file
- bat - DOS batch file
- bil - image file (band interleaved by line)
- bip - image file (band interleaved by pixel)
- blw - world file for bil image
- bmp - Windows bitmap image file
- bpw - world file for bip or bmp images
- bsq - image file (band sequential)
- bqw - world file for bsq image
- c - C programming language source code filename
- cat - UNIX hyperhelp supporting file
- cgm - Computer Graphics Metafile
- cls - geocoding classification file
- cnt - help file contents
- dat - generic data file extension dat - INFO attribute file
- db - Object Database File (also ODB)
- dbf - dBASE tabular data file
- dbf - Shapefile attribute table file
- dbg - problem debug log file
- dcp - default codepage file
- dct - geocoding dictionary file
- dec - UNIX hyperhelp supporting file
- def - defaults file (North Arrows, Layout Templates, etc) (ODB format)
- dem - Digital Elevation Model file
- dgn - Design drawing file (Intergraph)
- dir - INFO directory manager file
- dlg - Digital Line Graph file
- dll - Windows Dynamic Link Library file
- doc - MS-Word, MS-Wordpad document file
- dtd - UNIX hyperhelp supporting file
- dwg - Drawing file (AutoCAD)
- dxf - Drawing exchange file
- e00 - ARC/INFO export file
- ecw - ER Mapper Enhanced Compressed Wavelet
- eps - Encapsulated PostScript
- ers - ER Mapper raster file format
- exe - DOS/Windows executable file
- fbn - spatial index file for read-only datasets
- fbx - spatial index file for read-only datasets
- fls - Windows help supporting file
- ftg - UNIX help supporting file
- fts - UNIX help supporting file
- gen - ARC/INFO UnGenerate format
- gfw - world file for gif image
- gif - image file (CompuServe)
- hdr - header file (for ArcView extensions or TIF images)
- hlp - Windows help file
- htm - WWW file (hypertext markup, 3-character DOS version)
- html- WWW file (hypertext markup language, UNIX version)
- ico - Icon file
- idx - geocoding index for read-only datasets
- img - ERDAS Imagine image file
- ini - initialization file
- ixc - geocoding index for read-write coverages
- ixs - geocoding index for read-write shapefiles
- jpg - image file (Joint Photographic Experts Group)
- key - geocoding matching keys (ODB format)
- lin - ARC/INFO lineset symbol file
- lnk - Windows shortcut icon link file
- mat - geocoding matching parameters file
- mcp - image file (MacPaint)
- mid - MapInfo interchange format (always paired with "mif")
- mif - MapInfo interchange format (always paired with "mid")
- mrk - ARC/INFO markerset symbol file (not compatible w/ArcView)
- mxc - geocoding index for read-write coverages (ODB format)
- mxs - geocoding index for read-write shapefiles (ODB format)
- nit - INFO table definitions file
- ndx - fonts index file (UNIX only)
- nls - Codepage language files
- odb - Object Database ASCII file (ODB format)
- pat - geocoding pattern recognition file
- pdf - preferences definition file
- pif - Windows program information file (for DOS programs)
- pps - processing set codes
- prj - projections definition file
- ps - PostScript file
- rlc - image file (run-length coding)
- rs - image file (raster snapshot | Sun rasterfile)
- sbn - spatial index for read-write shapefiles
- sbx - spatial index for read-write shapefiles
- shd - ARC/INFO shadeset symbol file
- shp - Shapefile (stores feature geometry)
- shx - Shapefile (stores file lookup index)
- stn - geocoding standardization file
- tab - lookup file
- tbl - geocoding support table
- tif - image file (Tag Image Format file)
- tfw - world file for tif image
- tmp - temporary file
- ttf - TrueType font file
- txt - text file (usually ASCII)
- xbm - image file (X Bitmap)
- wmf - image file (Windows Metafile)
- wld - world file for CAD datasets
- wri - Windows Write.exe file
转自：HiGIS.cn