BookWyrm is an open-source social reading platform you can host yourself.

Track your reading, write reviews, follow other readers, and discover books without relying on Goodreads.

It also supports ActivityPub, allowing interaction with other Fediverse platforms.

github: https://github.com/bookwyrm-social/bookwyrm

More details: https://digitalescapetools.com/tools/tool.html?id=bookwyrm

More privacy-friendly tools: https://digitalescapetools.com/