I’ve been thinking I should write a post about it. Busy.org is doing a lot of good work (I am using their platform to write this comment).
The short answer is they are spread out all over the place. Utopian is a community of developers etc who are all building on the steem blockchain, but there are many more. Basically in the same way that Dtube is built on the steem infrastructure, so are others like busy, steepshot, Zappl, and others. So far I prefer to only use the ones that connect with steemconnect. I don’t like giving my private keys to 3rd party apps.
I’m always happy to answer questions so ask away. It’s taken me a while to learn what I know now (which is limited).
holy shamoly, yes, you definitely need to write a post. i've never heard of busy.org or utopian, or zapl, or steepshot. or giving private keys to 3rd party apps???? i've heard of and tried Dtube but i've wasted hours and hours trying to upload and got nowhere. I'm checking out all the things you've mentioned here. are they all connected somehow but not really? i await your blog when you get around to it!
Haha - they are basically like the steemit versions of twitter, instagram etc. Your keys are those long sequences of numbers and letters you use to sign into steemit. If in doubt, never give them away to anyone or sign into anything apart from steemit.com. I’ll do a post when I get a bit more time 😊