CDisplay is an image-viewing application optimized for DRM-free comic books and manga.
The user interface is clean, simple, and 100% focused on the reading experience. No skeuomorphic bookshelves, no unnecessary cruft.
Although CDisplay is no longer in active development, it remains the best experience on Windows for people who love to read comics.
Download CDisplay: setup.zip (1,132 KB)
Not using Windows? You can find alternatives here.
These stores offer at least some DRM-free comic books for sale:
In July 2003 I offered hosting to David Ayton, the author of CDisplay. He kept his site on (the now defunct) GeoCities, but hosted the install file on my server.
As far as I can tell, he died later in 2003.