Manganelo - Manganelo is an online application for manga lovers that offers millions of Manga to read and share.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
CDisplay Ex - CDisplay Ex is the most used comic book reader.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
HoneyView - HoneyView is a fast image viewer that supports archived image file for comics/manga/photos.
IrfanView - IrfanView ... one of the most popular viewers worldwide.