lately I've been digging bookwyrm, an open source federated goodreads by @tripofmice.
if you'd like, you can follow my public book reviews (from your mastodon or other activitypub-supporting service!) at https://bookwyrm.social/user/christa!
Hometown is adapted from Mastodon, a decentralized social network with no ads, no corporate surveillance, and ethical design.