POKATreader - With POKATreader you can read your PDF files in full-screen mode, but one of the best features is...
APV - Open Source PDF Viewer for Android based on MuPDF library
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
PDFZen - The powerful, simple, free online PDF editor for the masses; free yourself from the fax machine!
Okular - Okular is a universal document viewer based developed by KDE.