Fediverse is a decentralized social network, consisting of numerous instances running different software, all compatible with each other to some degree.

Some software are more compatible with each other: Mastodon and Pleroma both implement a similar model, id est microblogging, thus they federate nicely. Some are more different.

Currently, Fediverse is the go-to social network in these layers of the infosphere.

Bounced Paw VS the Fediverse

I am present on several Fediverse instances.