Calibre is a powerful and easy to use e-book manager
Thorium Reader
Thorium Reader is an easy to use EPUB reading application.
MComix3
MComix is a user-friendly, customizable image viewer. It is specifically designed to handle comic books (both Western comics and manga) and supports a variety of container formats (including CBR, CBZ, CB7, CBT, LHA and PDF). MComix is a fork of Comix.
CoolReader
Cross platform open source e-book reader.
Foliate
A simple and modern eBook viewer
Bulate sa mga tao sa libro
Basahin ang mga librong mahal mo nang hindi na kailangang mag alala tungkol sa iba't ibang mga kumplikado ng format tulad ng epub, pdf, mobi, cbr, atbp.