PDFelement Pro - PDFelement Pro is a feature-rich and highly useful solution that enables you to modify, populate, convert, sign and annotate PDFs.
calibre - Ebook manager, viewer & converter
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
FBReader - FBReader is an e-book reader for various platforms. Features:
PdfHighlights - PdfHighlights extracts and exports all your PDF highlights and PDF annotations from all your PDF files into a single report.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.