Mudmaker.com

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Existed once, I've not been able to find it in years. 
Is there any other kind of user friendly mud creation utility?

[reniat]

I have no idea what mud is, but is this it? https://www.mudmaker.org/

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No, this is interesting though. I was referencing Multi User Dungeons, that worked in a text based environment some used graphics, It was mmos before mmos. Examples are the Iron Realms games, Aetolia, Achea, Lusteernia, and the coming, uhhm Starmourn. Those are the most user friendly ones and can be played in browser, super easy to get in game, and LOTS of stuff going on. 

Others can be found on sites for voting on the best site of the genre, like Mudconnect.