Surfer is described as 'Full-function contouring, gridding, and 3D surface mapping software. It is used extensively for terrain modeling, bathymetric modeling, landscape visualization, surface analysis, etc' and is an app in the online services category. There are more than 10 alternatives to Surfer for a variety of platforms, including Windows, Web-based, Android, Linux and iPhone apps. The best Surfer alternative is QGIS, which is both free and Open Source. Other great apps like Surfer are Plus Codes, ArcGIS, what3words and Global Mapper.
TopoCal is a CAD software capable of creating digital models of any topographic project making the most of the great power of the software. The program is available in 6 languages: Spanish, Portuguese, German, English, Italian and French.
