All these apps are all distributed in some way, because they use a blockchain, but not federated. I think it's useful to have this list to point to, in case people think we just don't know about these apps, and because the non-scammy, free code ones might be worth approaching about implementing AP or Zot to bridge to the fediverse.
Because all these blockchain apps are in competition with each other, unlike the fediverse apps who cooperate on common protocols, it's hard to see how any of them will gain the network effect to compete with the legacy datafarms. Although some, like Resonate and Musicoin, are [platform cooperatives](https://www.opendemocracy.net/oliver-sylvester-bradley/ours-to-hack-and-own), it seems like at least some of the others are just datafarm larvae like [Everipedia](https://davidgerard.co.uk/blockchain/2018/10/13/everipedia-the-wikipedia-for-being-wrong-but-on-the-blockchain/), aiming to enslave enough users to get Vulture Capitalist funding, and exit by acquisition or IPO - Strypey
* [Afari](https://www.afari.io/) (pre-alpha) - a mobile-based social network built on the BlockStack blockchain. Not yet in beta as of 2018/12/20.
* [Akasha](https://akasha.world/) (beta) - a web-based social network app that uses the Ethereum blockchain.
* [eSteem](https://esteem.app/) - Tumblr clone using the Steem blockchain
* [Leeroy](https://leeroy.io/) (defunct) - a web-based social network app that used the Ethereum blockchain. Their website now directs users to Peepeth.
* [Minds](http://minds.com/) - an unmoderated web-based social network app that uses the Ethereum blockchain.
* [Mycelia](http://myceliaformusic.org/) - a social network for musicians founded by Imogen Heap, planning a Creative Passport app using a blockchain and smart contracts
* [Numaverse](https://numaverse.com/) (defunct?) - a web-based social network app that uses the Ethereum blockchain. Was planning to bridge with AP networks. May be abandoned due to competition from Peepeth and Minds.
* [Peepeth](https://peepeth.com/) - a moderated web-based social network app that uses the Ethereum blockchain.
* [SocialX](https://socialx.network/) - photo and video sharing on their own blockchain(?). The company is based in Singapore and got startup funding in an ICO using Ethereum. In beta as of early 2018.
