NOOK is described as 'Download NOOK, and get access to over a million eBooks, newspapers, magazines- all just a touch away. Plus, free samples of ebooks & thousands of free titles' and is an app in the News & Books category. There are more than 50 alternatives to NOOK for a variety of platforms, including Android, iPhone, iPad, Windows and Online / Web-based. The best alternative is calibre, which is both free and Open Source. Other great apps like NOOK are Amazon Kindle (Free), FBReader (Freemium), Moon+ Reader (Freemium) and Google Play Books (Freemium).
Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e., a single entry in your library that may correspond to actual e-book files in several formats.
Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and Android-based device. You can discover and read over 630,000 books in the Kindle Store, including the latest bestsellers and new releases.
Innovative book reader with powerful controls & full functions: • Read thousands of ebooks for free, supports online ebook libraries • Read local books with smooth scroll and tons of innovation Support epub, pdf, mobi, chm, cbr, cbz, umd, fb2, txt, html, rar, zip or...
Google Play Books lets you search, preview, and buy millions of books using Google Book Search. Books in the public domain and certain copyrighted books can be read and downloaded in their entirety for free.
Read book files in EPUB, PDF, DOC, DOCX, RTF, TXT, DJVU, FB2, MOBI and CHM formats. Supports chapters, bookmarks, page style. Saves the current reading position. Automatic detection and display of the list of all supported documents on your device.