Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
Ultimate PDF Converter - Ultimate PDF Converter is a great application for those who widely use PDF-documents and have a...
PDFZen - The powerful, simple, free online PDF editor for the masses; free yourself from the fax machine!
Movavi PDF Editor - Convenient PDF viewer that lets you manage your documents
APV - Open Source PDF Viewer for Android based on MuPDF library