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.
Read, search, make notes & highlights in PDF (Adobe DRM), EPUB (Adobe DRM), DjVu, TXT, FB2, FB2.zip book formats. Enjoy a unique, fast and user-friendly interface that was designed to provide the most convenient set of options for you to fully enjoy reading a book.
The most powerful and easy-to-use Book Organizer
Alfa Ebooks Manager is a free program that allows to organize your electronic and paper books in single e-Library.
Komga is a free and open source comics/mangas server with a web-based interface for browsing, searching and reading books and series as well as for administering accounts and access.
EPUBReader is a Firefox and Chrome addon which lets you read ePub-files just in the browser. You don't need to install additional software!
Cool Reader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Understands a number of text document formats, suppurt OPDS (in new ui-opengl version). Fully customizable palette, text reformatting with any font size, font...
Not management system, only reader.
Some users think Cool Reader is a great calibre alternative, some don't.
Download free Pdf, Epub books & novels. Snap & solve math, science, and more with AI.
MyBookshelf is web based program to manage your library of ebooks. It is fully web based, with simple, yet powerful interface. It’s written in python language and django web framework offers great flexibility and extensibility. Ideal for sharing ebooks within a group of people.
Store your ebooks. Track your reading. Discover new favourites.
Goodreads meets Dropbox - your own ebook cloud library for all your digital reading.
epuBear SDK is a C++ solution for EPUB readers development created by SCAND mobile app developers. It is fully compatibility with EPUB2 and partially with EPUB3. Open, unpack and parse EPUB documents from file or memory (byte array), get EPUB document info, render pages to...
epuBear is the most popular commercial alternative to calibre.
As a professional eBook Converter, Any eBook Converter will decode DRM-protected Kindle & Adobe eBooks and convert them to EPUB, MOBI, PDF, AZW, TXT. Besides, you can edit the metadata of eBooks, including the title, author and publisher, etc.
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The Windows version of AIReader has an absolutely terrible text layout, and an even worse interface. I'm not sure if it's possible to change the text layout, but I'm pretty sure it isn't.