What are some alternatives?
When comparing KDAN Mobile PDF Reader and PDF-XChange Viewer, you can also consider the following products
PDFelement - All-in-one PDF editor
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Winmail.dat Viewer Pro Edition - View, Annotate, Edit, Convert, Sign, Create & Fill forms, OCR, Create PDFs. Download Free trial PDF Reader Pro - All in one PDF Office alternative to Adobe Reader, and get it from Mac, iOS, Windows, Android.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
PDF Reader X - PDF Reader X is a nest in the class PDF reader, PDF annotator and PDF editor for the Mac OS X operating systems.
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.