BookshelfU have a lot of e-book? U dizzy find your usefully e-book? or u can’t manage this all e-book?. Don’t worry and let your smile happy because there is an e-book management solve all your problems. This software called as Calibre. Calibre connected with ISBN (International Standard Book Number) database and Google Books, This Software will help you to generate the update book cover, review from this book and everything that correlated with this e-book such as author, publisher, date of published,and some comment that people have given to this book. You also can get all of your book wherever you go, portability concept is also practically in this software. If u have and e-book reader you can also transferred your ebook to your reader just by plug and click sent it automatically because it  software has a lot of portable e-book reader authorized. Let’s we see the interface of this software!