Open source image viewer for Unix, specifically designed to handle comic books. It reads ZIP, RAR and tar archives (also gzip or bzip2 compressed), as well as plain image files.
Open source comic reader based on CDisplay. It uses the 7-zip plug-in to read many archive types like cbr, cbz, cbt amongst other formats and it supports jpeg, png, gif and bmp images.
Open source, OpenGL-powered picture viewer for Mac OS X featuring fast pre-fetching, smooth panning, voice commands, two-page mode, a magnifying lens as well as the ability to browse pictures inside pdf files and archives such as zip and rar.