MICRODEM is described as «freeware microcomputer mapping program written by Professor Peter Guth of the Oceanography Department, U.S. Naval Academy. MICRODEM displays and merges digital elevation models, satellite imagery, scanned maps, vector map data, and GIS databases» and is a GIS software in the travel & location category. There are seven alternatives to MICRODEM for a variety of platforms, including Windows, Linux, Online / Web-based, Mac and Android. The best alternative is QGIS, which is both free and Open Source. Other great apps like MICRODEM are GRASS GIS, SAGA GIS, what3words and Equator.MICRODEM alternatives are mainly GIS Software but may also be Map Services. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of MICRODEM.