Tachiyomi - A free and open source manga reader for Android.
Kinoko - Load the online comic content supported by any plug-in project to provide a convenient online comic viewing experience.
YACReader - Download YACReader for your platform. Windows, Linux, MacOSX. And enjoy you comic books cbr cbz with the best comic reader.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Mcomix - MComix is an user-friendly, customizable image viewer.
CDisplay Ex - CDisplay Ex is the most used comic book reader.