Blinkist - Key insights from 6,000+ bestselling books and podcasts
Instaread - Read or hear key takeaways of any book in minutes
Four Minute Books - Making you smarter in 4 minutes or less.
Amie - GitHub for research and data science
12min APP - Free reading app for summaries of nonfiction books.
SparkNotes - SparkNotes is a resource that provided study guides for multiple different types of subjects.