What are some free and open-source comic book readers available for download?

Popular free and open-source comic book readers include: 1) **CDisplayEx:** A widely used reader known for its simplicity and speed. 2) **Comix:** A GTK+ based reader with features like library management and image enhancements. 3) **YACReader:** A feature-rich reader with library management, customizable reading modes, and support for various formats.