Bridgy Fed is a bridge between decentralized social networks that currently supports the IndieWeb and the Fediverse, a portmanteau of “federated” and “universe” that refers to a collection of networks including Mastodon. It's a work-in-progress by Ryan Barrett (@snarfed.org), who has already added initial Bluesky support, and is planning on launching it publicly once Bluesky launches federation early next year.