Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Wibbitz - Watch video summaries of the news you want.
Instaread - Read or hear key takeaways of any book in minutes
wits.io - Weekly book summaries recommended by founders and makers
Summarize - Online Automatic Text Summarization Tool - Autosummarizer is a simple tool that help to summarize text articles extracting the most important sentences.
Bookcelerator - A curated directory of books that will make you smarter