Free Download Golden Software Surfer 30.3 build 273 | 223.6 mb Golden Software, a developer of affordable 2D and 3D scientific modeling packages, is pleased to announce the availability of Surfer 30.3 (273) is a grid-based mapping program that interpolates irregularly spaced XYZ data into a regularly spaced grid. What's new in Surfer 30.3.273 (Jan 12, 2026) New Features and Improvements - 3D View: Contents: do not auto-expand groups when you turn groups on/off - 3D View: Drillholes: Contacts: can create the top of the first unit, but not the bottom of the last - 3D View: Drillholes: