FBReader
Favorite Book Reader

FBReader 0.9 beta for Mac
The latest release date: 13 August 2018.
Download the installation image (for MacOS X 10.11+).
The beta release is very close to production quality. It supports most of the main FBReader features:
- Latest rendering engine (even newer than used in Android and iOS versions)
- Full support of ePub, fb2(.zip), and other text-based formats
- Experimental comics support (cbz format only)
- Network synchronization: books, positions
Missing features to be added soon:
- Bookmarks support, including synchronization
- More navigation features, including table of contents and page jumps
- Page footer
- Library book search
- OPDS support
- More preferences
- Full interface localizations for other languages
There are also a few secret features to be revealed soon.