I'm really excited about the work being done by Jonathon Roberts (aka +Fantastic Maps) with regard to his Fantastic Mapper project. The map depicted here took about 10 minutes to make, and I haven't added in much in the way of roads, settlements or other interesting places for characters to visit. So far it's just a fragment of an ancient empire, shattered states warring in the wilderness around a neutral territory which will hold the major "free city" of the region. Red waterways are contested territories, other colours are specific lands dominated by specific races/cultures.
For something quickly thrown together it's great. The only issue I'm having with the mapper at this stage is the inability to get beyond a certain size on the iPad and trouble access all of the hexes when certain menus cover hexes that I'm trying to manipulate.
I'll try it on the laptop next.