Alcamy - Free, open self-learning platform. Learn & teach anything.
Blinkist - Key insights from 6,000+ bestselling books and podcasts
4books - Learn the key ideas of the best business books
Instaread - Read or hear key takeaways of any book in minutes
StackML - Machine Learning platform in-browser, for creators
12min APP - Free reading app for summaries of nonfiction books.