The Generic Mapping Tools, GMT, are an open source collection of tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing PostScript illustrations ranging from simple x–y plots via contour maps to artificially illuminated surfaces and 3D perspective views. It is released under the GNU Lesser General Public License.

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Manager: Florian, Paul, Paul
Developer: Florian, Joaquim, Paul, Paul, Remko, Walter
Forum Manager: Kristof, test