Surfer

Surfer is a full-function 2D and 3D mapping, modeling, and analysis software package for scientists and engineers. Surfer's sophisticated interpolation engine quickly transforms XYZ data into publication-quality maps. Virtually every aspect of the map is customizable. Enhance maps with profiles, legends, titles and labels, faults and breaklines, or external maps from any web mapping service.

Surfer is used extensively by scientists, consultants, engineers, and many others across the globe.