It would represent a map that is semi-square of arbitrary size. It would have a simple system for representation of the map coordinates, such as 0101 (first column, 1st hex). I'd want the map to be able to tell me the distance between two points and what other hexes lay between those two points, as a list or array.
I don't care as much about the language, but C# or Python would be ideal.
Does one exist?