Okular - Okular is a universal document viewer based developed by KDE.
YACReader - Download YACReader for your platform. Windows, Linux, MacOSX. And enjoy you comic books cbr cbz with the best comic reader.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Mcomix - MComix is an user-friendly, customizable image viewer.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Panels - Comic Reader - Panels is a CBR/CBZ/PDF comic reader for your iPhone and iPad devices. Enjoy reading your comics in a clean and delightful interface.