CDisplay Ex is a popular comic book reader. It's capable of reading all comic book formats.

MComix is a user-friendly, customizable image viewer.

MangaMeeya is an easy-to-use comic reader that puts a special emphasis on manga.

Comix is an image viewer specifically designed to handle comic books. It reads ZIP, RAR and tar archive.

YACReader is a comic reader and comic manager with support for cbr cbz zip rar comic files.

EBookDroid is a highly customizable document viewer for Android.