DUNGEONFOG is described as 'With the extensive DUNGEONFOG Editor you can draw your RPG tabletop maps with just a few clicks – No more patching up map tiles! Create multi-level dungeons, terrains or entire worlds in an instant'. There are more than 25 alternatives to DUNGEONFOG, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Android. The best alternative is Eigengrau's Generator, which is both free and Open Source. Other great sites and apps similar to DUNGEONFOG are Campaign Cartographer (Paid), Dungeon Map Doodler (Free), Dungeon Scrawl (Free) and PyMapper (Free, Open Source).
Eigengrau's Essential Establishment Generator is a tabletop procedural generation tool for towns, NPCs and much more. It creates paragraphs of text suitable to be read directly to players during a game.
Campaign Cartographer is the leading map making software for games (RPGs, miniatures and wargaming). Campaign Cartographer gives you fingertip control of both the big picture and the small details. Want a large scale map of your adventuring world? A detailed dungeon floorplan?
Dungeon Map Doodler is a free, online tool for creating dungeon maps for tabletop role-playing games. Create a dungeon from scratch or use the "Generate Dungeon" option to roll up a random one and then edit it to your needs with a full suite of editing tools.
For the last 20 years, I’ve been playing tabletop RPGs with friends on a very regular basis. I’ve spent a huge amount of time writing scenarii and missions. I did it with traditional pen & papers at first, and with Google Docs afterwards.
donjon.bin.sh is a freely accessible, online collection of random generators and other tools for pen-and-paper role-playing games. The collection provides a comprehensive range of advanced generators for creating names, demographics, maps, adventures and even entire worlds.
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.
Dungeon Builder is... For roleplayers, by roleplayers: Dungeon Builder exists because we wanted an isometric dungeon map maker; not finding one that suited our needs and wants, we decided to make one ourselves.