Tabletop RPG Map editor 2 - RPG Map II is a “tabletop RPG” oriented map maker, created with the “keep it clean & simple” philosophy in mind.
Inkarnate - A free-form map editor for role-playing games, focusing on overland and continental maps.
Campaign Cartographer - Campaign Cartographer is the leading map making software for games (RPGs, miniatures and wargaming).
Wonderdraft - is an intuitive yet powerful fantasy map creation tool for 64-bit Windows 10, Linux, and MacOSX.
Mipui - An online grid-based map editor for games, with real-time collaboration.
Dungeon Painter - Dungeon Painter is a free powerful encounter map design tool.