Book inventory, Ebook Collection Organizer, Book Collection Manager, Book Collection Organizer:




calibre is described as 'Free e-book manager offering library management, multi-format conversion, syncing to devices, news download as e-books, built-in viewer, editor, and privacy' and is a leading Ebook Reader in the news & books category. There are more than 100 alternatives to calibre for a variety of platforms, including Windows, Android, Mac, Linux and Android Tablet apps. The best calibre alternative is KOReader, which is both free and Open Source. Other great apps like calibre are Librera Reader, Foliate, Koodo Reader and Readest.
Book inventory, Ebook Collection Organizer, Book Collection Manager, Book Collection Organizer:




Reflowable format allows you to create files for Kindle, print, and EPUB. Readers can adjust the size of eBook fonts, margins, and various properties on Kindle.


An ebook reader and library management app supporting ".epub" files. Arianna discovers your books automatically, and sorts them by categories, genres and authors.




Kindlian is a cool add-on for your Kindle. It's a desktop app that allows to view and manage Kindle books and collections. It works on Windows XP/Vista/7/8 and supports Kindle 3, 4, 5, Touch, and Paperwhite. A Mac OS X version is planned, but not yet available.



Ubooquity is a free, lightweight and easy-to-use home server for your comics and ebooks. Use it to access your files from anywhere, with a tablet, an e-reader, a phone or a computer.




Free and simple software for removing/decrypting DRM from Kindle, Adobe Digital Editions, Barnes and Noble, Kobo, Sony, Fictionwise eReader, and other ebooks. Many tools included, including stand-alone scripts and a Calibre plugin.


GooReader is a desktop application that allows you to search, download and read books and magazines available on Google Play Books , add bookmarks, annotate pages, create local library and manage your Google Library.



An easy to use ebook reader application that ensures a pleasant reading experience. The reader interface has a fresh feel and smooth transitions that make you read book after book on it. Lektz Reader supports EPUB2, EPUB3 and PDF format ebooks.



Shelf is a convergent document viewer that supports PDF and EPUB files. With Shelf, you can organize your document collection by creating tags, like other Maui applications.



Read the books you love without having to worry about different format complexities like epub, pdf, mobi, cbr, etc.




Focused on reading, not library management. Can't convert between formats.
That's just a reader, nothing else

Some users think Bookworm is a great calibre alternative, some don't.
💡 illuminsight 👀 effortlessly generates insights for selected text within your EPUB-format books, showing you relevant, contextualized data at a glance.



Calibre2opds can generate OPDS and HTML catalogs from the metadata of the calibre e-book library manager. These catalogs can then be used both to browse your e-book library online and also to download books on demand.




Calibre is for managing ebook libraries, converting ebook formats, and reading ebooks. The DeDRM tool can be installed as an unofficial plugin for Calibre for a specific purpose, but it is not an alternative to any of Calibre's major functions.