IRC like
matrix.org (via element.io): the Matrix cannot just be shut down by one central entity decisions. That is where of most of public discussions happen.
Join here https://app.element.io/#/room/#space-dao-community:matrix.org
Social networks
mastodon.world and fosstodon.org are examples of nodes participating in a decentralized social network powered by Mastodon
This is a lot to take? It is ok, you only need to take one Red Pill. The world is richer than your environment might let you think. These platform are not just decentralized, they are open source and we are making our best to use means that can be reproduced somewhere else, anywhere else.