The best Ebook Library alternative to calibre is KOReader, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to calibre and many of them are Ebook Libraries so hopefully you can find a suitable replacement. Other interesting Ebook Library alternatives to calibre are Librera Reader, Foliate, Readest and Koodo Reader.
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.
Librera Reader is a highly customizable and feature-rich application for reading books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR formats on Android devices.
Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.
Koodo Reader is an all-in-one e-book reader that can help you better manage and study your e-books. It's free and open-source.
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.
Openlib is an open source app to download and read books from shadow library (Anna’s Archive). The App Has Built In Reader to Read Books.
Calibre-Web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing calibre database.
Discover a vast library of books to search, preview, and buy, read free public domain books, sync page positions, and back up purchases online for a seamless reading experience across multiple devices.
Lightning fast with a slick design, Kavita is a rocket-fueled self-hosted digital library which supports a vast array of file formats. Install to start reading and share your server with your friends. book reader, self hosted, manga, comics, free, manhwa, e readers, electronic...
Citadel helps you manage your ebook libraries. It provides a simple, user-friendly interface to add new books to your library or update book metadata like titles, authors, and tags, all while remaining compatible with Calibre.
eBook solution offering multi-format library management, cross-device syncing of uploads, bookmarks, and highlights, online and offline access, private sharing, analytics, and secure digital library deployment for individuals, businesses, and schools.
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A very feature-full reading app. I use it with my PocketBook Color and PocketBook InkPad Color and it is much snappier than the default reading app.