This is an amazing list. Thank you so much. I'm definitely bookmarking this. I've been doing a tutorial series on DTube for newbies/minnows, and I'm realizing more and more that I'll never run out of material. There's such an immense treasure trove of things being built on Steem. This list only confirms that even more for me.

Another addition for the list: @PassageX (https://passagex.com) is a secondary event-ticketing network being built on top of Steem.