Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
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.
Google Docs Viewer - With Google Docs Viewer, you can quickly view many file types online, including PDFs, Microsoft...
Wondershare PDFelement - All-in-one PDF editor
DjVuLibre - DjVuLibre: Open Source DjVu library and viewer
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.