Dlgv32 Pro offers an easy to use interface for using a wide variety of geographic data formats, including DLG, DEM, DRG, and DOQ among many others. Among its many features, this software allows the use to merge, crop, and reproject any of the supported data formats into several available output formats, including GeoTIFF, DLG-O, DEM, DXF and several others. Also included is the ability to batch convert SDTS DEM data to USGS DEM format. See the website for a complete list of features.