
Ramarren |

What do you mean in specific?
If this is just a matter of keeping track of what has been explored/'building a map', then you can use any graphics program (I'm involved with one group that is using MS Paint).
Is the main point to have a single file on a single PC that you can display at game time? If so, *anything* will do, though I'd recommend Campaign Cartographer if you want relatively nice maps.
Or MapTool (without internet connection) will let you take a base Kingmaker Map and use either concealing tokens or Fog of War to reveal it as you go.