Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Resoomer - Resoomer is a software and online tool for text summary: it allows you to summarize and analyze your articles by taking up the important concepts
wits.io - Weekly book summaries recommended by founders and makers
SMMRY - Summarize articles, text, websites, essays and documents for free with SMMRY.
Instaread - Read or hear key takeaways of any book in minutes
Free Summarizer - Summarize *any* text online in just a few secs. *MAGIC*