From DSL Wiki

Application type: PDF viewer

Xpdf is an open source viewer for Portable Document Format (PDF) files. Xpdf is designed to be small and efficient.

I really wanted to include Xpdf in Damn Small Linux because so much online information is sitting in PDF format these days. A PDF viewer is almost like a second browser.

External links

Project Web Site
Wikipedia, where you'll find an informative article and several other links which you can improve if you discover something.