ScanTailor - Scan Tailor is an interactive post-processing tool for scanned pages.
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.
YASW (Yet Another Scan Wizard) - Download YASW for free.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
PDF Scissors - Crop pdf. Drop margin, whitespace. Auto crop all pages. Easy feature to make nice cropped pdf for ebook readers such as Amazon Kindle, Sony, Cybook etc.
Wondershare PDFelement - All-in-one PDF editor