Didn't know where to put this (so Mod's please feel free to move wherever is applicable). Like some others on here, I have a bit of a thing for maps and route mapping. I've been working on my idea of a perfect rail based transit system in the North East. Currently it is in powerpoint (i have a map which I have added routes onto). It is pretty basic, and huge. I was wondering, can anyone please recommend some software (free ideally) where I can recreate it in diagramatic form (with the potential to alter it easily). I know some people on here have done stuff like this in the past. Your assistance will be greatly appreciated. Again, my apols for just dumping this in here.