NeeView - Display two images simultaneously
Komikku - An online/offline manga reader for GNOME developed with the aim of being used on the Librem 5 phone.
ComicFlow - ComicFlow is an iOS app that allows you to read comics by opening .cbr or .
Panels - Comic Reader - Panels is a CBR/CBZ/PDF comic reader for your iPhone and iPad devices. Enjoy reading your comics in a clean and delightful interface.
ComiXed - ComiXed seeks to be the ultimate digital comic book management system.
Fomalhaut2 - A comic viewer for macOS.