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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .HDR | HDRsoft | GIS Files | High Dynamic Range Image File | HDRSoft Photomatix | HDRsoft |
| .HDS | Parallels | GIS Files | Parallels Desktop Hard Disk File | Parallels Desktop for Mac | Parallels |
| .HGT | Safe Software | GIS Files | SRTM Elevation Data File | ESRI ArcGIS for Desktop | ESRI (Environmental Systems Research Institute) |
| .HNR | Unknown Developer | GIS Files | Teleatlas Data | iGO Navigation | NNG |
| .HR4 | PCI Geomatics | GIS Files | Geomatica High Resolution Elevation | PCI Geomatica | PCI Geomatics |
| .HTF | Australian Government | GIS Files | Hydrographic Transfer Format | GDAL | Open Source |
| .HWM | ISYS | GIS Files | Own Raster Map Parameters | MapWise | ISYS |
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