PaperDungeonMaker is described as 'simple, free online tool to randomly generate tiled, dungeon maps for use with tabletop role-playing games like Dungeons & Dragons'. There are more than 10 alternatives to PaperDungeonMaker, 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 PaperDungeonMaker are Campaign Cartographer (Paid), Dungeon Scrawl (Free), donjon.bin.sh (Free) and Tabletop RPG Map editor 2 (Free).
Illwinter's Floorplan Generator is a grid based dungeon and wilderness floorplan creator. The floorplan generator can be used to quickly draw and print an encounter floorplan for your favorite pen and paper roleplaying game.
Make your own maps in a hand drawn style for your favourite tabletop rpg games like Dungeons and Dragons (DnD). Save your time by using this tool to create maps effortlessly instead of drawning them from scratch. You can even export, edit and print them!