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.
Book Scan Wizard - A utility to help with Book scanning using cameras as a scanner.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
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