PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
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.
ScanTailor - Scan Tailor is an interactive post-processing tool for scanned pages.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Briss - Cross-platform application for cropping PDF files in a simple and fast way via a GUI.
Wondershare PDFelement - All-in-one PDF editor