GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
Blinkist - Key insights from 6,000+ bestselling books and podcasts
Goodreads - See what your friends are reading.
Instaread - Read or hear key takeaways of any book in minutes
boook.link - boook.link is a web-based tool for creating one single link / landing page for a book, so your readers can choose from which store to buy the book.
wits.io - Weekly book summaries recommended by founders and makers