I've long since switched to foundry, but I used to use
https://www.rptools.net/toolbox/maptool/
It's not web based, but the clients are available for linux mac and windows,
I've long since switched to foundry, but I used to use
https://www.rptools.net/toolbox/maptool/
It's not web based, but the clients are available for linux mac and windows,