AutoREALM

The purpose is for gaming but the uses of this program can benifit all sorts of people.

"a free Fantasy Role-Playing mapper software and a new GNU Community of Role-Playing Gamers. AutoREALM is a Free GNU mapping software (a "cartographer") that can design maps of castles, cities, dungeons and more. AutoREALM is generally used by Role-playing Game practicants who enjoy doing their own maps. But it could fits the needs of other people."