BookWyrm is an open, federated alternative to Amazon Goodreads. The platform is primarily used for three things: tracking reading progress in books, offering user reviews of literature, and letting users build out lists of books that interest them. BookWyrm is capable of pulling data from other open book data repositories, such as Inventaire and OpenLibrary, and can also import metadata directly from Goodreads itself.
Like GoodReads, but tired of Amazon? BookWyrm might be what you're looking for.