Once in awhile, while surfing the Internet, you may come across files that
you can't view. Sometimes, your web browser will ask you to download these
files. Then what?
Well, though the web is a great medium for unifying people, there is some
content which does not lend itself well to the traditional browser
experience. Consequently, you may have to install separate file viewers
to help your computer understand what to do with those files.
Here's a short list of file viewers which can interpret some the most common
"alternate format" files you might find on the Internet.
Adobe Reader (PDF Viewer)
Microsoft Windows and Pocket PC, Apple Macintosh, Palm OS, Unix
variants, and Other
Foxit Reader (PDF Reader)
Microsoft Office Viewers (Excel, Word, PowerPoint, Visio)
Microsoft Reader (eBooks)