Blinkist - Key insights from 6,000+ bestselling books and podcasts
Summize - Scan a photo of your textbook or news article and instantly get a summary.
Instaread - Read or hear key takeaways of any book in minutes
Free Summarizer - Summarize *any* text online in just a few secs. *MAGIC*
Amie - GitHub for research and data science
SparkNotes - SparkNotes is a resource that provided study guides for multiple different types of subjects.