What are some alternatives?
When comparing Amazon Kindle and Foxit Reader, you can also consider the following products
FBReader - FBReader is an e-book reader for various platforms. Features:
PDF Reader X - PDF Reader X is a nest in the class PDF reader, PDF annotator and PDF editor for the Mac OS X operating systems.
calibre - Ebook manager, viewer & converter
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Cool Reader - Fast and small cross-platform eBook reader for desktops and handheld devices
Evince - Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS...