There’s also Storygraph, a smaller, independent GoodReads alternative. It’s gotten some positive coverage, and I’ve had a good experience using it.
Oh and also it would be great if they upstreamed their corrections to open library.
But for now I'll stick to volunteering for Open Library and improving the situation there which helps many sites.
Current project I'm working on for them is to have their author pages supplemented by Wikidata. It's relatively low hanging fruit and then encourages people to contribute further upstream.
If anyone is interested in volunteering as a dev, designer, or librarian you should totally hop on their weekly call it's very friendly :)
I had the pleasure of seeing the CEO of StoryGraph, Nadia Odunayo, at a Ruby conference a year or so ago. She was a keynote speaker and she was absolutely wonderful.
Nadia gave a presentation on encountering a Ruby bug, but presented it as a mystery story with chapters and narrative storytelling. Definitely one of the best, entertaining presentations I've seen in a long time.
RubyConf 2022: Keynote: The Case Of The Vanished Variable - A Ruby Mystery Story by Nadia Odunayo https://www.youtube.com/watch?v=C5eVFVHKuDE