calibre - Ebook manager, viewer & converter
YACReader - Download YACReader for your platform. Windows, Linux, MacOSX. And enjoy you comic books cbr cbz with the best comic reader.
Adobe Digital Editions - ebook reader software
Tachiyomi - A free and open source manga reader for Android.
Calibre Web - Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks...
Mcomix - MComix is an user-friendly, customizable image viewer.