Green - PDF Viewer - Linux Framebuffer
green is a PDF reader. Its main distinguishing feature is its ability to output to the Linux framebuffer (and other display methods supported by SDL). It aims to be small and efficient and not waste display space. Another rare feature is its ability to open multiple PDFs and switch between them.
https://github.com/schandinat/green/wiki
http://freecode.com/projects/green-2