Okular
From MobileRead
Okular is a cross-platform document reader supporting a variety of formats. It is primarily for Linux and its variations.
[edit] Overview
Among other things, Okular reads PDF, PostScript, DJVU, multipage TIFF, DVI, XPS, FictionBook, ComicBook, Plucker and ePub. Since it ships with KDE, it can be considered the primary reader for that desktop.
