[jgtrosh]

IMO mupdf is the real less for PDFs. It is so lightweight and straightforward it makes everything else seem terribly bloated.

[omaranto]

Zathura can use mupdf as its PDF renderer (it can also use poppler). I like using the mupdf library through Zathura rather than using the mupdf application, because Zathura has plugins for other file formats too, like PostScript and DJVU, and that way I learn a single set of keystrokes to view all sorts of documents.