Artifex Software
MuPDF
FreeView PDF documents with parser or rendering library.
WindowsSmartOffice - View & Edit MS Office files & PDFs
FreeSmartOffice is an intuitive, easy-to-use document editing application with a sleek design inspired by the familiar UI of a desktop Office document.
Android
AFPL Ghostscript
Freeengine for the interpreter for PostScript and PDF
Mac
MuPDF for Linux
FreeAllow you to view PDF documents with parser or rendering library.
Linux
