Buoh - Buoh is a reader for online strips comics.
comiXology – Comics & Manga - comiXology is a handy Comics & Manga app for iOS that enables you to browse more than hundreds of thousands of manga, digital comics, and graphic novels from popular publishers such as Image, Marvel, and DC.
Woofy - Woofy is a pretty neat webcomic downloader, designed for simplicity and ease of use.
Manga Storm CBR - Manga Storm CBR is the best-in-class app for accessing and reading DRM-Free comics in formats like PDF/CBR/CBZ on the iPad/iPhone.
ACMEreader - This comic viewer / comic reader lets you read your daily comics with ease.
Izneo - Izneo, Read Manga, Comics and BD is a leading all-in-one digital manga and comic application that allows you to read unlimited comics even offline.