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.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Nitro Pro - An affordable Adobe Acrobat alternative for editing and creating PDF
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
MuPDF - MuPDF is a lightweight PDF and XPS viewer.