I made a new page showing a graphical representation of the various branches of the dungeon in Crawl, along with the players currently exploring those branches. It updates every two minutes, and turned out pretty neat! Right now there are no labels or player names, but the 'hard' work is done in designing it.
Also, the Nethack player info below wasn't updating properly before, but now it is fixed. Every five minutes new data should display.
Check them out!