MICRODEM is a microcomputer mapping program written by Professor Peter Guth of the Oceanography Department, U.S. Naval Academy. It requires a 32 bit version of Windows (NT/2000/XP or 95/98/ME).

GeoTIFF represents an effort by over 160 different remote sensing, GIS, cartographic, and surveying related companies and organizations to establish a TIFF based interchange format for georeferenced raster imagery.
You can find a lot of informations in here.