Goodreads - See what your friends are reading.
Four Hour Book Club - 300+ Books recommended on the Tim Ferriss Show 📚
Riffle - Just good books and the readers who love them.
StartupBooks.io - A curated directory of books for your startup journey.
LibraryThing - A home for your books.
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.