4 Free and Open-source Ebook Apps for macOS (Intel and Apple Silicon)

1- Calibre

ebook reader

calibre is an e-book manager. It can view, convert, edit and catalog e-books in all of the major e-book formats. It can also talk to e-book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e-books for convenient reading. It is cross platform, running on Linux, Windows and macOS.

Calibre is a strong eBook suite that do more than displaying eBook files. It offers converter to convert eBook file formats, organize your eBook library and collections, and it works seamlessly on Windows, Linux, and macOS

Read about Calibre 's features, license, platforms, and more.

2- Eplee

Sweet, simple epub reader

Eplee is an ePub reader focused on clean distraction-free reading experience with simple and beautiful UI.

Read about Eplee 's features, license, platforms, and more.

3- FBReader

eBook reader for ePub, Mobi, ETF, and Fb2.

FBReader is a popular eBook reader that supports many eBook formats such as EPUB, Mobi, ETF, and fb2.

FBReader is not an open-source software, but it is avaiable for free for Windows, Linux, macOS, Android, and iOS.

FBReader uses its own book parser and rendering engine. The engine is lightweight, fast, and highly customisable.

Read about FBReader 's features, license, platforms, and more.

4- Koodo Reader

open-source ebook reader

Koodo Reader is a modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux and Web

Read about Koodo Reader 's features, license, platforms, and more.