GMT Games
GMT Games is a California-based wargaming publisher founded in 1990. The current management and creative team includes Tony Curtis, Rodger MacGowan, Mark Simonitch, and Andy Lewis. The company has become well known for graphically attractive games that range from "monster games", of many maps and counters, to quite simple games suitable for introducing new players to wargaming. They also produce card games and family games. "The Washington Post" called GMT "the modern hobby's highest-profile wargame publisher".
Generic Mapping Tools
Paul Wessel and Walter H. F. Smith created GMT in 1988 at Lamont-Doherty Earth Observatory, officially releasing it on October 7, 1991 under the GNU General Public License. The letters GMT originally stood for Gravity, Magnetism and Topography, the three basic types of geophysical data. Besides its strong support for the visualisation of geographic data sets, the software includes tools for processing and manipulating multi-dimensional datasets. Most GMT users are geoscientists.