Surfer is a full-function contouring and surface modeling package that runs under Microsoft Windows.

Surfer is used extensively for terrain modeling, bathymetric modeling, landscape visualization, surface analysis, contour mapping, watershed and 3D surface mapping, gridding, viewshed analysis, volumetrics, and much more.

Who should use Surfer?
Hydrologists, engineers, geologists, archeologists, oceanographers, biologists, foresters, geophysicists, medical researchers, climatologists...