calibre - Ebook manager, viewer & converter
PdfHighlights - PdfHighlights extracts and exports all your PDF highlights and PDF annotations from all your PDF files into a single report.
FBReader - FBReader is an e-book reader for various platforms. Features:
PDFelement Pro - PDFelement Pro is a feature-rich and highly useful solution that enables you to modify, populate, convert, sign and annotate PDFs.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
DocMadeEasy - Edit and sign PDF. Send files safely and securely using end-to-end encryption with 256-bit AES. PDF document management and conversion.