Category
page 1EPUB readers
Q747793
e-book management and editing software
Apple Books
e-book application by Apple
Q479808
PDF reader, free software
Okular
Okular is a free and open source multiplatform document viewer developed by the KDE community based on the Qt and KDE Frameworks libraries. It is distributed as part of the KDE Applications bundle. It replaced KPDF, its main predecessor, alongside KGhostView, KFax, KFaxview and KDVI in KDE 4. Its functionality can be embedded in other applications.
Google Play Books
digital distribution service for ebooks
Q1165026
EPUB e-book editing software

FBReader
FBReader is an e-book reader for Linux, Microsoft Windows, Android, and other platforms.
MuPDF
MuPDF is a free and open-source software framework written in C that implements a PDF, XPS, and EPUB parsing and rendering engine. It is used primarily to render pages into bitmaps, but also provides support for other operations such as searching and listing the table of contents and hyperlinks.
Adobe Digital Editions
E-book reader software