Console.Waterworks.Core is the .Net Core version of Console.Waterworks. Both projects are Nuget packages. And, their main purpose is to help you write extendable command-based console programs. If you want to write a console program using the full .Net Framework, use Console.Waterworks.
A .Net Standard library which you can plug into to project and draw gridded overlays onto you images. Please note, Death Socket uses System.Drawing brushes and not System.Media brushes.