D&D Map Sketcher went into open beta that you can download (or play) it from its itch page, a tool to create maps for your tabletop RPG session, in which you can also get friends in on it as well through online play in a server that you’d create. This game / tool is being developed by Daniel F. Marques.
Right now it only has the minimum features to be able to show its potential. You are invited to tell your friends and try it out. In its current state, it should be able to hold your session’s dungeon exploration and combat. I recommend using Discord for voice, text chat and dice rolling (through bots).