Tertulia - Books Worth Talking About.
Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Reese’s Book Club - Every book, everyone’s invited
wits.io - Weekly book summaries recommended by founders and makers
Bookcelerator - A curated directory of books that will make you smarter
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes