A program that automatically creates a visual representation of MUME's world is called a mapper. Usually it allows you to show your current position, the terrain, remembers doors, some mappers allow to display guilds, shops, places of fresh water or other information.
If you encounter problems in setting up a mapper or using it, please do not ask via pray for help from the immortals. Use the site/email-address of your mapper's developers to ask questions, sometimes mortals can help if you "narrate" about it.
- See MUME on Github for a complete list