Ran across this today:
It's an online slideshow editor, publisher and hosting service with a lot of extras.
Slideshow. Hmmm, yawn. Well, OK, but the UI is very nice, featuring a dark color scheme that avoids competition with the slides while bringing out the colors. It also uses a simplified icon style and a black and gray palette that I've been known to use myself. Very impressive. Denizens of the Dark Web will appreciate the effort that's gone into it. Filing this one under "Works Well with NNL".