I haven't had time to write a description about what the Fediverse is exactly.  In the meantime, have some links:

  * [[wp>Fediverse]]
  * [[https://joinmastodon.org/|Mastodon]] - One of the most popular Fediverse apps.  Open source and self-hosted.  A federated twitter like platform for social networking.  We run our own instance at [[https://glasgow.social]].

  * Our current recommended overview for beginners is here: https://write.privacytools.io/bwbjyxibnx