calibre
Open Source
Calibre is an Ebook management software.
Cool Reader
Open Source
Cool Reader is a configurable eBook viewer.
Okular
Open Source
Okular is a universal document viewer based developed by KDE.
EPUBReader
Free
EPUB is an e-book file format with the extension .epub that can be downloaded and read on devices like smartphones, tablets, computers, or e-readers.
Compare FBReader with alternatives
Compare Cool Reader and FBReader and decide which is most suitable for you.
Compare EPUBReader and FBReader and decide which is most suitable for you.