1.) Mastodon 2.7, a decentralized alternative to social media silos, is now out! (by Packt Publishing on https://hub.packtpub.com/mastodon-2-7-a-decentralized-alternative-to-social-media-silos-is-now-out) -- January 21, 2019
The key there is that the lead paragraph describes Masto as a: ''decentralized alternative to commercial social media silos and returns the control of the content distribution channels to the people.''
2.) The best Tumblr porn alternatives on the internet (https://www.dailydot.com/irl/tumblr-porn-alternatives) from 23 January this year.
Sunbeam City is a Libertarian Socialist solarpunk instance. It is ran democratically by a cooperative of like-minded individuals.