ACBF Viewer - Comic book reader.
OpenComic - Open-source comic and manga reader for the desktop.
Comix - Comix is an image viewer specifically designed to handle comic books.
Comic Seer - Comic Seer is one of the simplest and fastest applications that is used for reading, viewing and managing the comic stuff.
Mcomix - MComix is an user-friendly, customizable image viewer.
CDisplay Ex - CDisplay Ex is the most used comic book reader.