CC3+ is the fastest and most powerful map-making software in its class. In minutes you can learn all you need to rapidly create beautiful overland, dungeon and city maps for campaigns, games and real-world applications, for private and commercial use.
While many of us have become pampered by DND Beyond's rulebook integration, Beyond Tabletop brings us back to our basics. By removing the integrated rulebooks they allow for every feature to be homebrewed and managed how you and your DM desire. In my findings it is the best tool out there as far as capturing the feel of pen and paper while also giving the versatility and ease of access of the internet.
Roll20 - Roll20 is a suite of easy-to-use digital tools that expand pen-and-paper gameplay.
Inkarnate - A free-form map editor for role-playing games, focusing on overland and continental maps.
Astral Tabletop - Create, host, and manage your tabletop role-playing games — online or in person
Wonderdraft - is an intuitive yet powerful fantasy map creation tool for 64-bit Windows 10, Linux, and MacOSX.
Fantasy Grounds - Fantasy Grounds is a virtual tabletop to help facilitate play of tabletop-style role-playing games...
PyMapper - Drag and drop tile based mapping program.