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

• Fediverse
• 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