This generator by 'watabou' enables you to create a single-page dungeon, with notes, in one click. There's an example I just generated below. You literally just hit "enter" to generate a new dungeon.
Yes.Can I make just a map without random mages in corners and people looking to hand me a quest- in the middle of a dungeon!
Very nice. I like how the locks also generate the keys needed to open it.