You can imagine how delighted I was to find that Wonderdraft now also makes a dungeon mapping software called Dungeondraft. Like Wonderdraft, Dungeondraft puts out solid quality maps quickly and with little skill required on the part of the user. You can see more about it in the video they have advertising it here:
And below you can see a map I made earlier today for a game I'm running on Friday. As far as battle maps go it is serviceable. But it didn't take long to make, just a bit of futzing around with the tools.
My favorite part though is there is a random generator for dungeons or caves so you can just click a few buttons and get a random layout that you then populate with decorations. Definitely useful when you just want something small and quick, or something you can potentially reuse in different scenarios.
Not bad for $20.