calibre - Ebook manager, viewer & converter
CDisplay Ex - CDisplay Ex is the most used comic book reader.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
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.