Blinkist - Key insights from 6,000+ bestselling books and podcasts
calibre - Ebook manager, viewer & converter
12min APP - Free reading app for summaries of nonfiction books.
FBReader - FBReader is an e-book reader for various platforms. Features:
Book Summaries - Great books summarized in 5 quotes (or less) so you can get the main idea fast.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.