Creating map markers and symbols becomes a simple task with Symplicity. Characters from any font installed on the local machine are easily manipulated into custom designs. The resulting images can then be used to annotate static maps or referenced by style definitions in GeoServer or MapServer. Every image has a surrounding halo so it stands out against any kind of background. Saving a symbol generates a set of .png files in a variety of sizes along with a ".sym" file containing all the configuration parameters. What could be easier?
Symplicity is a 32-bit application for Windows:
symplicity-2-1-8.exe
symplicity-2-1-8.msi
Free symbol fonts are easy to find online. Here are several good sources:
https://www.fontspace.com/category/symbols
https://www.dafont.com/mtheme.php?id=7
https://all-free-download.com/font/symbol.html
https://www.hongkiat.com/blog/symbol-fonts/