GeoPlot 4.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The software is included in Photo & Graphics Tools. The most popular version of the tool is 3.5. This free program is a product of GeoPlot. The program's installer files are commonly found as GeoPlot.exe or Gp400mx.exe etc.
From the developer:
GeoPlot is a free VBA macro program used in Excel for plotting geochemical data. It has the following functions: X-Y plot, triangular plot, normalized spidergram, discrimination diagram, and the related functions such as calculating formulas and CIPW norm.
You may want to check out more software, such as P-CAD 2004 Viewer, Baldor Electronic Catalog or AutoCAD OwnerGuard, which might be related to GeoPlot.