[ Thanks to Femi
for this link. ]
“Portable document format is one of the most popular
file formats on the web. Of course Adobe is the market leader for
PDF. However, there are lot of free alternatives around. Here are
some free pdf viewers for ubuntu.“a) Evince
Home Page http://projects.gnome.org/evince/“Evince is a document viewer for multiple document formats. It
currently supports pdf, postscript, djvu, tiff and dvi. The goal of
evince is to replace the multiple document viewers that exist on
the GNOME Desktop with a single simple application. Evince is
installed by default on the ubuntu desktop.“b) xpdf”